Glasses

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Origins development steps optometry MP3 glasses glasses glasses lens frames polished Introduction sense physical properties related stories along the formation and development of the industry since the formation of industry sectors change frame glasses frames culture culture culture Foreword lenses eyeglass lenses lenses Eyewear Category Selection Considerations choose glasses glasses frame lens care and maintenance kind antique glasses to protect children's glasses look appropriate size suitable spectacles eyewear lenses Expand edit this section originated development in 1268, the earliest records Rogier Bacon

 

kinds of glasses (20) of the lens for optical purposes. However, at the same time, will be loaded box magnifying lens for reading has emerged in Europe and China. About the glasses are introduced to China from Europe or China into Europe there has been controversy. In Europe, the earliest glasses appeared in Italy by Alessandro di Spina of Florence introduced the earliest glasses portrait "Hugh of Provence" is Tommaso da Modena painted in 1352, China has emerged before the Song Dynasty glasses prototype. Glasses [1] first appeared in 1289 in Florence, Italy, is said to be a man named Al Mato optical home and a life in the Italian city of Pisa Spina invention. American inventor Benjamin Franklin, suffering from myopia and hyperopia, myopia far in 1784 invented the dual-purpose glasses; 1825, the British astronomer George Avery invented glasses that can correct astigmatism. Some people think that Chinese people invented in 2000 years ago, glasses, China in the mid-Ming Dynasty appeared glasses. Tian Yi Heng Ming Dynasty in the "stay green day Sapporo" Volume "Ai cloudy sky" article says: "Every look at the article, eyesight faint tired, do not distinguish detail, in order to cover the head, spirit lingers, Nobuaki strokes. Using damask silk Vanda , tied at the back of the head, everyone does not know, I move to ask.

glasses pictures [2]

I said: This Ai cloudy sky also. "At this time of Ai cloudy sky that is initially called. Edit this paragraph MP3 glasses MP3 glasses is a complex new product, look at MP3 glasses already on the market, its appearance and practical degree to boast about. New MP3 glasses maximum feature is built-in sound (you can adjust volume, volume range to ensure that only the wearer can hear), if want to hear more clearly, MP3 glasses and headphone jack convenient to use headphones to listen to music. MP3 glasses and regular glasses similar appearance and weight , not looking distinction is impossible to separate the two. MP3 glasses only drawback is: no screen.

title

Edit this paragraph glasses glasses step assembly steps: optometry, lens selection, selection of frames, polishing, assembling.

glasses

before the optometry optometry, do not repeatedly use of the eyes, resulting in visual fatigue. Recommended optometry in the morning, to ensure accuracy. Lens material to glass, resin-based. Glass material is characterized by high transparency, using them feel more clear and bright. Main characteristics of the resin material is light, easy to fragmentation. Frame material to plastic, metal based. Plastic, light weight, easy to trigger allergy symptoms. Metal products with strong, durable, not easily deformed and so on. Polished using grinding machine to correct the shape of the lens and the frame to make it fit within the basket. Edit this paragraph glasses lens material common sense understanding of the lens material has the following main types: 1, glass lenses glass lenses have more than any other lens material characteristics scratch, but the relative weight of its more sedate, the refractive index relatively high: conventional tablets of 1.523, thin piece: 1.72 or more, up to 2.0. Glasses has been relatively less. 2, resin lens resin lens and lighter than glass lenses, greater impact resistance. Can be divided into two types: spherical resin lens and aspherical resin lenses. Traditional spherical lens, the lens around to see objects with distortions, limiting the wearer's vision, in the era of technological advancements, aspheric lens design can broaden horizons and make images clear and comfortable, but also the original true colors, to meet consumer the visual needs. Resin lens with its anti-ultraviolet radiation, light, safe loved by consumers, almost a monopoly market. 3, PC lens market, also known as the lens space. It is characterized by light weight, impact force strong, more resistant to impact than the resin lenses. Only about one-tenth the weight of the glass, as compared with the conventional resin lens has only half the weight. General PC lenses need to add anti-scratch protective film after use will be sufficient to get better on Aging. PC lens also has an important feature, that is, PC lens with harmful UV cut effect. Choose the right lens is the refractive index of the lens refractive index lens materials reflect the degree of light refraction, unlike transmittance. High refractive index lens curvature of the mirror to make lighter, thereby reducing hyperopic and myopic lens center thickness of the lens edge thickness, so the higher the refractive index, the thinner the lens. Usually we say, 1.49,1.501 refractive index of the lens as an ordinary lens, 1.56, 1.60 refractive index of thin lenses, refractive index of 1.61 and above thin lenses. Plus the advantage of hard lenses lenses and simply through the lens of organosilicon inner and outer surfaces, inner and outer surfaces of the lens forming a thermal chemical and mechanical protection layer to increase the corrosion resistance of the resin material and anti-friction properties. Because anti-friction properties of the resin material as glass, but after organosilicon hardening process, the resin lens surface abrasion performance has been very close with glass lenses. If the lens without hardening, coupled with improper care, a few months later, the lens surface will wear flowers, the results affect the consumer's visual health. The effect of the lens lens coating film can be selectively increased to visible light, to improve the lens transmittance, the image clearer, but also harmful infrared and ultraviolet barrier, greatly improving the surface hardness of the optical resin lens. Choose frames selection of frames Precautions should be noted that, authentic glasses are in the mirror legs, nose or signs marked with the glasses-size parameters, and can adjust the tightness, for example: 51 19-136, which means that the frame Size 51mm, nose size 19mm, mirror legs Dimensions 136mm. Read prescriptions glasses on the network, consumers need to provide optometry degree and IPD, if astigmatism, astigmatism and need to provide axial, general optometry list format is as follows:

prescriptions

Note: The above prescriptions interpreted as: the right eye (R or OD): myopia (S) -2.00 (200 degrees), astigmatism (C) -0.75 (75 degrees ), axial (A) 135 (the direction of astigmatism); left (L or OS): myopia (S) -2.75 (275 degrees), astigmatism (C) +0.00 (no astigmatism); PD (pupillary distance) : 62mm If there is no astigmatism, only degrees left and right eye and IPD can. Edit this paragraph 1 Physical properties, refractive index (n); 2, water content (% by weight); 3, the oxygen permeability (cm2 / s) (mlO2/ml · kPa) @ 25 ℃ × 10-11 4, the elastic Modulus Pa * 104; 5, specific gravity (g/cm3) [1] refers to a material transparent clarity. Is the chemical, purity and hydration and other factors of expression. Usually with a specific wavelength of light through a sample of a substance expressed as a percentage of transmittance of the transparent substance. The value in most crystal of the contact lens material (no coloring) in 92% to 98%. Hardness of the material hardness and toughness is an important indicator of quality, it reflects the lenses and lenses produced durable performance. This attribute hardness, hard mirror more closely than soft lenses. Reflecting the degree of flexible material toughness. Flexibility and good material to wear lenses for early stage feel good, but can not correct astigmatism, the cornea because it is easy close. Coincide with the shape of the cornea. Tensile strength of a material in the stretch before breaking state, it can withstand the maximum tension value. → good durability, high tensile elastic modulus of a material to withstand the pressure that the ability to maintain a constant shape. Material with a low resistance to stress → small. High material → better resist stress. To maintain shape, provide better visual effects editor About this paragraph from the lens of the functional sense, it can regulate the amount of light entering the eye to increase the visual acuity, protection

glasses

Eye Safety and clinical treatment of eye effect. Children for refractive error caused by strabismus and refractive abnormalities in patients with headache, wearing glasses can be treated. The glasses frame functions, in addition to its support for the constitution glasses lenses worn on the eye play a role in bracket, it also has beauty, decorative. Modern pop stressed, glasses with the times people have facial makeup and clothing harmony, reflecting the high social class, learning elegance, fashion, and so symbolic. With the rapid development of social technologies, as people culture, the continuous improvement of living standards, vision care work, glasses in people's lives that will be playing an important role in the field. "Experts say, pick a mirror for many people can be considered" just be ", so they will not completely abandon the surgery some remarks on the contrary, will spend more energy to study, to find a solution. 27-year-old grandson President intends to Nanjing after the New Year back surgery done, but Cai Ruifang "seal knife," the news gave him a blow, Mr. Sun has been concerned about the developments until later Cai Ruifang out on his own interpretation of "being misunderstood, do not continue to do LASIK is not Because I think that LASIK potentially dangerous or have problems, but there are other considerations. LASIK is the most safe and effective refractive surgery, can be very accurately the degree of correction of myopia, Sun firmer commitment to myself to surgery. Glasses are embedded in the framework of the lens lenses worn in front of the eye to improve vision, eye protection or for decorative purposes. There are special glasses for viewing 3D stereo images or virtual reality images. Glasses can correct a variety of vision problems, including myopia, hyperopia, astigmatism, presbyopia, or strabismus. Other types of glasses including goggles, sunglasses, swimming goggles, etc., to provide a variety of eye protection. Modern glasses, usually in the middle of the lens has a nose (nose brace), and the left and right arms resting on a cushion on the ear position. Beauty or who are not accustomed to wearing glasses, you can choose to contact lenses for vision correction. Although contact lenses and LASIK surgery is becoming increasingly popular, but the spectacle is still the most popular vision correction tool. Edit this paragraph related stories said that in mid 13th century, the British scholar Rogier Bacon see many people due to bad eyesight, can not see the text on the book, wanted to invent a tool to help people improve vision. To this end, he thought a lot of ways to do a lot of trials, but without success. One day after the rain, Bacon came to the garden walk, see a lot of spider web dip Raindrops Raindrops see he found through the leaves, veins enlarge a lot, even the leaves on thin hair can be seen. He saw this phenomenon,Adidas AdiPure TF, very happy. Bacon immediately ran home, rummaging through to find a glass ball. But through the glass ball, reading the text, or blurred. He also found a diamond with a hammer, cut out a glass, holding a piece of glass near the book and saw the text really magnified. Experiment was a success, bacon ecstatic. Later he got a wood, dug a round hole, the glass ball tablets accord, then the placement of a handle, easy to hand, so that people read and write much more convenient. This lens Later, through continuous improvement, it has become worn glasses. Just vision correction, there juvenile myopia used to wear reading glasses and the elderly, as well as a variety of other uses of glasses, people learn, work even more convenient. Bacon for the progress of human civilization contributed. Edit this paragraph formation and development of the industry formed in our history with the development of individual handicraft, crystal glasses made of natural stone materials used to develop the use of glass, the glasses begin to civil use of the promotion and expansion of production technology there are new developments. China's Suzhou (Suzhou) is the birthplace of our glasses, glasses not only historic Suzhou production, but also for the development of China's optical industry played a great role in promoting. Chongzhen Ming Dynasty (AD 1628), Suzhou glasses in the history of the mountain is now an outstanding technician, named Sun Yun ball, the word Wenyu, and the word Si Bin, Wujiang origin. He grew studious, when he saw a person is not healthy eyesight is very painful, but "single photo" mirror of the class and inconvenient to use. So he may well develop a regular lenses in the glasses frame. He passed repeated tests, the use of mechanical principles inventions of the lens grinding machine - led Tuo car. This led Tuo car is called the classical method of processing water orange, with pedal rotation, using ore sand, white clay, brick dust etc. for abrasives or polishing materials, ground into the lens concave lens to fit refractive needs, and finally mastered the grinding technology. Built out of stone with natural crystal lens. He also mastered the "light" (optometry) technology, according to the person's age and different vision developed presbyopia, myopia, hyperopia, and other varieties as well as various luminosity of the lens, and to prepare a set of "eye in the mirror with "The original method of optometry with Habitat for experimental projects. So that you can head over glasses, the effect is no less, wearing the face is also more convenient and comfortable to accommodate the needs of each vision, this is the beginning of our own optometry. Later, Sun Yun ball invented developed optics for different purposes, there are flowers mirror, duck mirror, magnifying glass, a polygon mirror, magic mirrors and other content many dozens. Since then, Sun Yun glasses made famous around the ball. Unfortunately, this one has a technical talent, 33-year-old passed away. But he left one called "mirror history" scientific works. Later in promoting optical manufacturing technology, played an invaluable role. Following the Sun Yun after the ball to the Qing Dynasty Emperor Qianlong, Jiaqing years, Suzhou and glasses out of a manufacturing talent, named Chu three mountains. He further developed the manufacturing technology of glasses, influential. As Suzhou ball out of the Sun Yun, Chu three mountains two outstanding manufacturing glasses and technical personnel, so as to promote the then Suzhou formation and development of the optical industry. In 1735, Suzhou has emerged hand workshop specializing in the production of glasses. To the Qing Emperor Kangxi, the production and sale of glasses in Beijing, Shanghai, Suzhou, Tianjin, Guangzhou and other places to flourish. Glasses have become a special commodity. Shun industry starting from 1840 after the Opium War, the Western glasses technology into our country, for the optical industry's rise has opened up new avenues. Qing Dynasty, the first Englishman John High German (J. HnGoddard), opened in Shanghai in the "high moral Matheson" franchise machine grinding photodiode glasses. After thus connected to other foreigners. Such as child care pole Division (TobiM) opened a "crystal clear Matheson" British Jews Ray Mao Dayton opened "Ray Gordon Matheson Mao" and so on. After this point, to 1911 was in the "high moral Matheson" work of the Chinese people financing set up a "China Lean glasses company." Since the opening of Lean glasses, so China's optical industry has a new development. Especially in optometry has been greatly reform: ① Start abolished the old store long-standing "light card" optometry, using a combination of host-guest optometry technology. ⑨ eliminated purely manual lens making method using a mechanical grinding equipment, the development of grinding technology, then not only can grind a variety of different nature, different specifications of the lens, also began Producer kinds of homemade style frame (frame ). ③ In the inspection, grinding, cutting, loading and straightening, and other technical aspects of the system, the use of a number of new foreign technology and equipment, which trained a generation of professionals making glasses for China's optical industry soon form a new technical team, and lay a solid foundation. Industry changes in old China Although the development of optical industry begun to take shape, and have the industry will wait for the gang or with industry trade organizations, but in its production and distribution in family hands are private shops and workshops, and its products are mostly for the ruling class decorations, demand outstrips supply, the price is expensive, and thus slow the development of aggression. Especially in the production industry. Until the eve of the liberation of the country only few manufacturers produce glasses are a one, as many as a dozen production workers, ranging from a duo, and the production process is very backward, poor product quality, variety, and for decades has consistently the system. After the founding of New China, the Party's correct line under the guidance of eyewear started by small family workshop manual production, and gradually to organize co-production of small businesses. Such as: Beijing cooperatives and public-private partnerships in the former, one of the few businesses glasses. There are hundreds of families of small industrial workshops, employing about 270 people; business professionals concurrently from 39 shops, employing less than 300 people, of which only ten (ie: lean, Ming dynasty, oriental, shrewd, flourishing, Siming , Baolong, Liu Zhai, SUN Yong-Liang Chang Kee). With the rapid development of China's economic construction, glasses industry has also been actively developed. In industry, Beijing, Shanghai, Suzhou and other major producing all have a certain scale of glasses production base. Glasses a plant such as Shanghai, Shanghai glasses Plant,Adidas F50 TRX TF High Energy Electricity Red Yellow White Soccer Cleats, Beijing glasses factory, Beijing 608 Factory, Beijing 603 Factory, Suzhou glasses factory, has become China's glasses industry, large enterprise, the size of medium-sized enterprises are thousand of the country. Members of the quantity and quality of its products and supporting capabilities rank first in the country, and some products was the municipal or national level quality products, brand-name products for many years and some long-term export. Marketing the country and abroad. In addition, a number of defense industry enterprises, industrial instrumentation as well as some enterprises are turning to the optical industry production and processing, business services sector is also expanding sales outlets and adding or increasing L optometric equipment, instruments. Some cities also attaches great importance to theoretical education, such as Beijing, Shanghai, Guangzhou, Tianjin, Chongqing and other small glasses technology also offered short courses and other professional staff a technical school for the optical industry trained a large number of professional and technical personnel. April 1985, led by the National Ministry of Light Industry advocates in Zhenjiang City, Jiangsu Province, held a national eyewear industry, "Chinese Optical Society" inaugural meeting. The collective will of the membership to a total of more than 140 member companies, including large-scale backbone enterprises have 85, respectively scribe th Ministry of Light Industry, Ministry of Commerce, Ministry of Machinery Industry, weapons industry, agriculture and fisheries, the Ministry of Health and the National Science Committee; respectively, in 14 provinces, municipalities and autonomous regions and other 31 cities; workers a total of 27,237 people. Among them, the technical staff l, 393 people: 500 people or more units 15, 200 a unit of 29 to 500 people, 200 people following the unit 41. Divided by economic nature: universal enterprise 15, 49 collective enterprises, township enterprises Io months, a number of joint ventures. This 85 unit Total net fixed assets 145,220,000 yuan, annual production capacity of 1984: Frame 20180000, (where the metal frame 5.9 million). Lens 16090000, rough 16,940,000; output value 140 million yuan, the total sales of 190 million yuan, total profit of 34.49 million yuan, annual exports of frames, lenses 1500000, swap $ 750,000. Optical Society there are more than a year after the establishment of hundreds of plant, to apply to join the association, to the end of 1986 has grown to 240 member companies collectively, a total of 30,000 employees.

 

variety of materials glasses frames (20) China's optical industry, is the result of thousands of years of development and changes. Has been formed with a certain size and a certain production capacity of the large industries in the entire national economy, which become an indispensable part of the country and the people and make its due contribution. China's glasses on the market there is a new market: the online market. This is the e-commerce in traditional industries play a major role in the way of an expression, as the world's first comprehensive collection of business information platform for the industry, all walks of life gathered information consignment products on sale, agency project investment information, direct product supply information. Has the ability to serve both the distributors, agents, buyers characteristics. Business home is a dealer, agent, most resources website. Where: Exhibition it more suitable for consignment products on sale, investment is more suitable proxy investment projects, supply wholesale and retail outlets with a more suitable product advertising communication capabilities than Alibaba b2b, with more dealers, agents, compared with Baidu and other search engines, classified information is rich, powerful sales and investment, distributors, buyers and more; Edit this paragraph frame

 

exquisite spectacle frames (14) frame material in the early days of metal and tortoiseshell, stainless steel, titanium, Xin-nickel alloy, plastic and Monel, nickel alloys and other materials. Frame in the technologies and applications of materials, there is also a lot of breakthrough memory alloy frame glasses, can maintain its shape, even if buckling will not break, making glasses have a longer life, but we also avoid the inconvenience of broken frames. Arm twisted bits in the frame to join spring also contributed glasses more durable. The titanium metal frames, the lighter, more resistant to corrosion, due to sweat to avoid long-term wear of metal corrosion and loss of luster. Edit this paragraph foreword glasses glasses cultural culture reflects a national, ethnic ideology, ethics, values, beliefs, customs and other cultural characteristics, along with the historical and cultural development and the development of the times. It is a combination of material and art, through tangible ways reflected. It is a reflection of the progress of social civilization, but also reflects the wearer's identity, social status, ideas, hobbies and so on. The cultural connotation of cultural lenses lens is mainly reflected in the fine quality material degree, the size of the lens, curve, mix and color, gloss and other fine degree. In ancient times, emperors, the official, the rich and the civilian population with glasses of different colors reflect different cultures and connotations. In modern times, industry, agriculture, commerce, science, defense and other social strata, male, female with a mirror, different styles, all embody the people's ideological and cultural connotations. Frame cultural frame material culture is reflected in the level of quality, frame shape, color, beautifully decorated degree, as well as other aspects of graphic meaning. Ancient carved frames are often blessed, Lu, Shou, financial and other patterns, which embodies the "blessing in the eyes", "happiness and longevity", "to cement", "Four Seasons rich" and the value of content. Meanwhile, Liang shelves often also carved with name, size, name, gold and so on. According to social status and identity of different emperors, dignitaries used more frames with gold, silver, tortoiseshell, ivory and other precious materials, while many ordinary people used glasses with copper, iron, steel, wood and other materials. Glasses beams pattern, from the initial arch-shaped door shape, Horseshoe-shaped, curved, gradual transition to a glyph, bamboo-shaped, turned down the beam shape, etc.; Liang cards, Comb, shaped by the moire, cats head shape, tiger-shaped transition to Yingtou-shaped, two-point-shaped, Plum Point shape and other shapes. Frame Modern Frame in ancient culture based on further development, whether in the form, or from design to decoration, patterns and colors, have become more colorful, reflecting the new values ​​and aesthetics. Edit this paragraph eyeglass lenses lenses define national standards are divided into mandatory national standard (GB) and recommended national standard (GB / T). National standards by the national standard code number, order number issued national standards and national standards published reign (using two digits of the year of release) components. Mandatory national standards is to protect human health, personal and property safety standards and laws and administrative regulations to enforce national standards; recommended GB refers to the production, exchange, use, etc., through market regulation and economic instruments or voluntary adoption of national standards. But recommended GB By accepting adoption, or the parties agreed in the contract agreed to include the economy, to become parties must abide by the technical basis for legally binding. "Standardization Law" will be our standards are divided into national standards, industry standards, local standards (DB), enterprise standard (QB) four. The current implementation of the standard lens lens material - the basic parameters of the lens perform QB2506.2001 indicators - Executive GB10810.1.2005 norms film - perform QB2682.2005 specification transmittance - Executive GB10810.3-2006 progressive multifocal - Executive GB10510.2 [3] Edit this paragraph glasses sunglasses sunglasses category, also known as sunglasses, sunglasses, is designed to protect the eye glasses, lenses are often black or dark, thereby to avoid the sun (especially ultraviolet light) stimulation eye. China in the Song Dynasty, when there is sun glasses. Monocle

monocle

China's oldest minerals or transparent crystal glasses are making a circular monolithic mirror. After the Ming Dynasty had glasses West into China or Southeast Asia, Wu Kuan in getting a gift from friends glasses thank poetry, the poem describes a "circle with English pod with a net and mica horses," usage is "holding the Near eyes ", monocle also known as" single photo "," single lighting already, the old pass is Western Heritage Act. "(" Suzhou Prefecture ") color glasses while driving many car drivers often wore a Deputy black glasses. Snow day in the sun, or when driving a car, this pair of dark glasses to protect your eyes from the glare of prolonged stimulation. However, when the car suddenly approached by a dark daylight time, wearing black glasses have become a burden. While wearing a while pick, too inconvenient friends. What is a good way to relieve the distress of drivers do? There, wearing color glasses prospective OK. In the sun, it is a black sunglasses, thick black glass lenses block bright light. In the soft light of the room, it also becomes and ordinary glasses as transparent and colorless.

color glasses

mysteries of color glasses in glass. This special glass is called "photochromic" glass. It is in the manufacturing process, pre-braced light sensitive material, such as silver chloride, silver bromide, silver (collectively halide), as well as a small amount of copper oxide catalyst. Glasses from no color to light gray, dark brown, and then change back from ordinary glasses black glasses are silver halide becomes magic. "In color glasses glass, there is an exposure imaging and photographic film is very similar to the process of change . silver halide to light decomposed into many black silver particles uniformly distributed in the glass, the glass lens so dim, block light passage, which is black glasses, however, the photosensitive film is not the case, generated after the decomposition of silver halide and halogen atoms, still tightly put together when the back a little darker place, under the facilitation of copper oxide catalyst, silver and halogen compounds re-generate the silver halide, glass lenses and become transparent up. halide resident in the glass, the decomposition and reaction of compounds repeated infinitely manner. photographic film and photographic paper can only be used once, color glasses but they can keep using it. color glasses not only with the light Darker strength that can absorb harmful ultraviolet rays of the human eye, is indeed in the top grade glasses and if the windows are put photochromic glass, sunny day when the sun is less than the room to shoot; in Some upscale hotel, restaurant, has been the placement of the glazing. automobile window of the cab and tour buses fitted with such a photochromic glass in direct sunlight, even the color glasses do not have to wear, the carriage remains soft light, avoid bright sunlight and exposure, which is how everybody happy ah! Contacts

contact lenses

contact lenses, by definition, wonderful in "invisible." It has both ordinary glasses vision correction function, but also lifted the glasses inconvenience, so wear contact lenses have become an today's fashion. However, contact lenses are not for all those who need glasses are applicable and who do not wear contact lenses? Patients with cold hands often with a large number of bacteria, they are easy to take, into the eyes when wearing contact lenses. In addition, flu is often accompanied by a slight inflammation of the retina, wearing contact lenses make the inflammation worse. Many common cold, cough, and pain medicines contain ingredients suppress tears. Contact lenses will reduce the amount of tear secretion is too dry, reduce transparency, thereby affecting vision. People who have allergies lead to complications of wearing contact lenses have a slight inflammation, eye itching, redness, conjunctivitis and eye swelling. If these symptoms for long periods of treatment, may endanger vision. Allergies If you must wear contact lenses, it is best to use only during the day, and at least one day per week suspended. If there is inflammation, it is best to stop using. If 2-3 days after the inflammation has not reduced immediately to the hospital. Glaucoma, chronic dacryocystitis, conjunctivitis, corneal ulcers, hyperthyroidism and other diseases If equipped with contact lenses, while the eyes are in the inflammation, to wait until the inflammation disappeared after wearing. Fever fever when the eyes of local resistance decreased tear secretion, B. subtilis will multiply, the bacteria metabolites deposition in the cornea and lens, resulting in lower oxygen permeability contact lenses,cristiano ronaldo soccer shoes 2013, corneal disruption of normal metabolism, thus caused by bacterial corneal ulcers. The elderly to 40 years of age, the eye tissue will be more obvious degenerative changes. Ocular resistance decreased, especially in the eye decreased ability to tolerate hypoxia, at this time if the surface of the eye lens wear thin, can cause eye hypoxia, and thus prone to corneal infections, ulcers and other complications. 40-60-year-old middle-aged man wearing contact lenses can be short, 60 years of age or older is best not to wear contact lenses, otherwise easily lead to serious complications, resulting in permanent visual impairment. Pregnant women are not suitable to wear contact lenses. Pregnancy, due to a change in the human endocrine function, decreased barrier function of the corneal tissue, reduced tear secretion, causing discomfort to wear, so it is best not to wear. Crystal glasses, crystal glasses are expensive, but after wearing feel very cool, some people think that it has the role of raising purposes. This is no scientific basis. Crystal glasses are the first to be used for the production because it was not yet the manufacture of optical glass, there is no better than the crystal optical material. Crystal glasses are expensive because of hard brittle crystal geology strong, not annihilation but not because of pure crystal yield less maintenance on the eye with special effects, people feel cool wearing crystal glasses crystal lenses because ultraviolet and infrared absorption for low temperature less , but it does not support projects. Basketball Glasses Cause: sports arena, you have no experience or

basketball glasses

who saw the collision or force due to physical eye injuries caused bloody scenes? Especially in some highly competitive sports, because sports equipment confrontational limbs and very intense, a little carelessness and any unintentional collisions may cause permanent damage to the eyes, while the traditional optical glasses in addition to vision outside and can not really make up to protect your eyes, but also layers of security risks exist in the external force, the frame and the lens easily fall off / deformed or broken (broken) crack and damage the eyes. Eye injury accidents are: 1. Corneal scratches 2. Iris inflammation 3 front of the eye hyperemia 4 5 traumatic cataract. Retinal swelling 6. Corner cracking and so on. Features: Frame: Designed for myopia basketball enthusiasts, framed by high-tech processing technology integration, width, curvature of the face features more suitable for Asians, knuckle good flexibility, not easy to deformation, can more effectively protect the eyes and nose, flank vents make more safe and comfortable to wear, can ho no scruples surf in the sports arena. Nose pad: a unique, soft, flexible and anti-allergic silicone nose pads, so that the frame will not stick too close to the face, but also in close contact with the opponent when you are able to effectively resist and cushion the impact of the eye, protecting eye from damage. Suitable for basketball, football, volleyball, tennis, rock climbing, cross-country and other sports. Self-adjusting glasses is based on self-adjusting glasses optics, sensors can consciously change the curvature of the lens, and to make corresponding new diopter adjustment soft lenses, glasses can make a long-term use, do not replace, save trouble, save money achieve optical glasses in the history of the application and a major revolution. Reflective glasses can Rearview

can rearview reflective glasses

A special glasses. Positive side is no different from ordinary glasses, wear, through the outside of the lens, can clearly see the situation behind him, so that detectives can easily indecisive, beware of being anti-tracking. For tracking and monitoring purposes, both in the work behind the object being monitored, but also in their front or side of the job, with good concealment. Corrective glasses glasses commonly used, mainly using lenses, prisms, contact lenses to correct vision, etc., in order to eliminate eye fatigue, eye protection or therapeutic purposes. Many different types of glasses, optical correction of refractive errors are mainly used glasses and contact lenses. Myopia correction: should wear an appropriate focal concave lens, so that the light emission by the concave lens properly, and then refracted by the eye on the retina to form a clear image. Hyperopia correction: should wear an appropriate focal convex lens, so distant parallel light by a convex lens converge appropriate number, and then refracted by the eye on the retina into a clear image. Astigmatism correction: Due to the type of astigmatism varies. For simple hyperopic astigmatism should wear appropriate and a certain degree of axial convex cylindrical lens; For simple myopic astigmatism, should wear appropriate and a certain degree of axial concave cylindrical lens; For complex astigmatism should wear degree and axial suitable convex convex (or concave concave) composite cylindrical lens; For mixed astigmatism should wear appropriate degree and a suitable axial punch composite made of a cylindrical lens. But regardless of what type of astigmatism is, the glasses should be strictly measured axial cylindrical lens to make the need to correct astigmatism in the meridian plane is effectively corrected. For irregular astigmatism due on the same meridian plane refractive power is not the same, can not be corrected with a cylindrical lens, you can try contact lenses (contact lenses) corrected. TV glasses

TV glasses

is mainly used virtual display technology, video glasses through the physical size is only 0.24 inches of screen images projected onto the retina of the eye, resulting in two meters of the human eye distance for larger screens. Functional glasses specifically refers to in a particular environment, the next stage, to give a specific group of people to bring the eyes of advantageous properties, can change the visual experience, so that the line of sight becomes more comfortable, clear, soft special glasses. According to the information at home and abroad of functional description and classification of glasses that feature glasses generally include: special mirror students, college students dedicated mirror, computer special mirror, sport-specific lens, driver special mirror, intelligent reading glasses, mirrors and other special police. Features the largest entrepreneur specializing in Functional glasses Glasses in research, development and sales of integrated technology company Edit this paragraph glasses Selection Considerations 1, first choose a regular, reputable glasses shop to the preparation of glasses, glasses have a certain quality and service protection. 2, in the glasses before, should be the first optometry, not blindly buy. 3, glasses produced or optional, the school with the school staff will be equipped according to face. Generally speaking, if the parameter fit, wearing new glasses, would be very clear. 4, if the product is found to have quality problems, should be promptly get in touch with the store. Select eyeglass lenses can be divided into two categories, namely glass lenses and optical resin lenses. Glass lenses including optical glass lenses and high-refractive index lenses (commonly known as thin film), its high hardness, good wear resistance, the general quality and various parameters do not change over time, but the anti-glass lenses impact resistance and weight slightly inferior resin lenses. Resin lens is generally much lighter than glass lenses, and superior impact resistance glass, but its lower surface hardness, it is easier to be scratched. Resin lens and lens coating due to its characteristic soft, so usually the mirror should be careful not to let direct contact with hard objects, best to scrub with water (or blending a small amount of detergent) cleansing, and then try again with a special high-quality cotton cloth or sucking up water droplets on the glasses. In addition, in areas of poor environmental conditions should be used with caution coated lenses, so difficult to clean stained with dirt. In the choice of frames, in addition to price, other than for the standard appearance, with particular attention to the selected frame size and I try to match the IPD, because of its direct impact on the intrinsic optical quality glasses and wearing comfort. Recognition for the quality of the main frame may consider the following few: 1, resilient frame generally of good quality. 2, the coating smooth and glossy frame quality is better. 3, joints smooth, small and uniform good quality frames. 4, parts assembly close by as well. 5, left and right lens ring size, shape must be exactly the same, nose symmetry. Frame aesthetics of modern fashion frames is part of and no longer just a medical apparatus. Optician who wear glasses, do not want to expose their faulty, but to frame can play a decorative role, to cover weaknesses, highlighting the advantages. (A) the main skeleton structure based on facial shape determined by the geometry of the face shape can be divided into six categories: square, rectangular, round, inverted heart-shaped and oval. The classification is not absolute, concrete face shape and each of these may vary, but for the analysis of face shape, select the appropriate frames helpful, highlighting the advantages, disadvantages cover, giving the feeling of symmetry and balance. For example, a square face shape wear circular frames can eliminate the feeling of too obvious edges and corners, the same round face, square frame will add a sense of edges. In other places, of a similar phenomenon. Such as bars plump people wearing clothes will look slim, wearing the clothes bar will be fatter. Face more round than straight hair also tends to increase the sense of contour, rarely hot curls. Choose frames plus a basic principle is the width of the frame width basically consistent with the temporal side, the frame is too wide would be too cumbersome, and will increase the lens aberrations. To analyze each face in turn below: 1) relatively short square square face, prominent jaw line and angular. We need to note that two features of a square face: square, short. A circular frame, in particular a circular bottom edges of the frame can be reduced feeling too obvious. Pull the "long" Face it, there are two methods: This method is the most important: Choose height smaller frames, frame height is too large to account for the majority of face, and people feel this face shorter; if If possible, choose a higher position foot mirror frames, the face will look longer two) as rectangular and square face, this face shape is also apparent angular jaw, the difference is a long face. We still need to ease the edges and corners of the frame with a round, but more needed to shorten the face shape. Square face shape with the aforementioned: Select large height, the mirror foot position in the middle of the frame, so that the frame can occupy an appropriate portion of face 3) heart-shaped heart-shaped face, also called inverted triangle face, characterized by a wide forehead prominent cheekbones, narrow jaw tip. This face shape appearance and uneven bottom, the upper than the lower part of the large and prominent, you need to wear the appearance of the frame opposite, ie wider at the bottom so as to increase the width of the lower half of the face. Temples also help improve the position of the lower results. 4) inverted heart face inverted heart face also feels uneven, narrow forehead, the more down wider, so the lower jaw wide and more prominent. This face shape is relatively rare, the frame selection principle contrast with heart-shaped face, you need to temples on high, narrow at the bottom of the frame 5) round round face and a square face shape is totally contrary to the principles and therefore choose a square frame face almost completely the opposite; angular frame the more obvious need to improve the sense of contour face shape, but also need to use a square face "lengthening" the principle that the use of low height, mirror frames feet higher position. 6) ideal oval face, oval face, person, face, skeleton is not particularly prominent, there is no obvious disadvantages to cover. But this "ideal" face shape will be derived from the lack shape, the necessary changes to the application of the principle of "lengthening" or "shortening" the face shape. (B) the shape of the nose and the eye-shaped handle is made for the overall appearance of the frame face Reference principles, details of the aesthetic defects sometimes face require special handling. For example, the nose is too pretty, if wearing a low bridge or double beam frame, you can hide this shortcoming. Similarly, wear high nose of frames, make a small nose look bigger. Close proximity of eyes who can be light at the bridge of the nose, to the temples gradually become darker in color frames. From the wide eyes of those opposite. Typically, the frame at the top should be parallel with the eyebrow and highly similar, namely, and eyebrow contour or slightly higher (such as frame drop, the top should be flush with the eyebrow). If the wearer high eyebrow, choose dark frames are better than light, which will highlight the wearer's eyebrows high, people feel there is another one eyebrow feeling of presence. (Three) color color people generally divided into two categories: the tone of warm orange and blue for the tone of cool colors. Most people like to choose the color to match the dress, so you can display the character. We have come to understand from an aesthetic point of view selected frame styles and colors, but to illustrate several points: First of all, these are just basic theory, fashion is always changing, people have different tastes, so the wearer's desire to help is the most important ; secondly, you also need to consider other reference frame selection criteria: functionality and feel, they may be contradictory and fashion standards. Also most importantly, fashion principles just to help us choose, rather than absolute. Second, the frames feature frames function of factors to consider when selecting two aspects: (a) control function of the lens frame selection frame, it should take into account the interaction of the lens: the larger frame size, frame effective diameter The larger the minimum required larger lens blanks, cutting edges of the lens corresponding to the corresponding thicker, heavier. Therefore highly lenses and aspherical lens that require small size, symmetrical, round or square frames, and a long frame is inappropriate meridian. The gradient mirror is necessary to have a suitable height of the frame, from the pupil center position to the bottom of the groove circle mirror vertical distance of at least 22 mm. For highly astigmatic lenses, mirrors need to be considered the highest degree meridian direction. If +6.00 / -4.00 * 180 of the lens, to select a relatively narrow, highly larger frames, larger than the height of the frame, so that the thickness of the top and bottom edges will not be too thick. And +6.00 / -4.00 * 90 lenses will have to choose relatively wide, and highly shallower frames. (Two) Objective choose to wear glasses frames to consider when wearing purposes. Some frames may be suitable for everyday wear, but for people who have special requirements, may not be appropriate; while some frames are only suitable for certain environments wear. Third, the wearing comfort also need to choose the right frame considering wearing comfort. Factors affecting wearing comfort including frames and weight of the glasses, which depends not only on the weight frame materials, but also by the size of frames and lenses, thickness. Also frames fit case will affect wearing comfort, need to properly select, adjust the frames. Frame importance of wearing comfort can not be ignored, complaining of discomfort frames wear glasses people do not complain about vision problems than fewer people. Four, considering the frame aesthetics, functionality and spectacles frames and other frames selection criteria feeling often there is a conflict between, then you need to know which side is most important, and sometimes even several pairs of frames needed to solve different conflicts. Of course, in addition to the above, but also on the quality of the frame itself, there is a certain understanding. When the hands of a pair of glasses, we should make a point of view from the following observation. (A) look at the surface: to select the surface clear, shiny, unblemished disease, scratches, bumps, corrosion, spalling and other problems mirror legs. (2) see "ID": In addition to the regular manufacturers printed in the frame on the number, size, also printed on the grades. (3) see modeling: the mirror legs opened, flat, look in the mirror body and legs are angled mirror tilt frame is the same size, each part is symmetrical frame, metal frame with spring leg elastic legs are the same, various components working fine. Edit this paragraph maintenance glasses to protect a spectacle, one hand pick wear around the frame will destroy the balance, resulting in deformation, suggest that you hold hands and cheeks temples along a direction parallel to pick to wear. 2, take time to wear off before the general left mirror legs, easy to cause frame deformation. 3, the proposed rinse water glasses and dry with paper towels, and then try to use special glasses cloth wipe, wipe the mirror must lift up the side of the frame edge wire, gently wipe the lens, to avoid excessive force causing the frame or lens damage. 4, do not wear glasses, use glasses cloth into the glasses case. If the temporary placement, please upward convex glasses, or easy to wear flowers lenses. Meanwhile, the glasses should be avoided with insect repellent, toilet articles, cosmetics, hair sprays, medicines and other corrosive materials in contact, avoid prolonged direct sunlight and high temperature (60 ℃ above) placed, otherwise easily lead to lenses, frames degradation, deterioration, discoloration, etc. . 5, regular adjustments to the specialty store for shaping, frame deformation will burden the nose and ears, the lens is also easy to loose. 6, do not use the glasses in intense exercise, avoid strong shocks led to broken lenses, causing eye and facial injuries; Do not use worn lenses to prevent vision loss caused by scattered light color; Do not look at the sun or strong dazzling light to avoid eye hurt. Clean glasses doorways clean glasses principle is to be bright and clean, not contaminated with grease, to avoid scratching the lens. Use a mild soap or special detergent, rinse and then use lens-cleaning paper or the soft tissues dry, many people have picked up the clothes, handkerchiefs and other habit of wiping the lens, which is not the correct action because the rough material easily scratched lenses. Clean the slit between the frames, you can use an old toothbrush to gently scrub with a soft, remove grime. Collection glasses to carefully place the glasses have a way to develop a fixed habit, first with flannel wrapped lenses, then folded the left frame, then folded the right frame, in order to prevent excess weight glasses, glasses can be placed on a rigid glasses collection box. Eyewear is a small thing, but cleaning and maintenance is very important, unfortunately, many people only vaguely, ranging from damage to glasses, hinder visual impact, while in accelerated deterioration of vision, it is not accidentally. If you want to know more detailed maintenance, or have any questions, you are welcome to a special hospital with glasses, you will be satisfied and detailed answers. Maintenance of contact lenses contact lenses gently thin close to the eye, once contaminated, the immediate and direct damage to eyes, therefore cleaning and maintenance must not be lazy. In addition to lightness finds other eye diseases, generally three kinds of contact lenses are subjected to contamination; one external contamination, such as airborne dust, oil, cosmetics, detergents. Second, the eye itself, such as tear proteins, mucus secretions. Third, bacteria, mold contamination. Therefore, the cleaning and maintenance of contact lenses in addition to carefully avoid scratching, but also to reach a thorough cleaning, sterilization, protein three kinds of tasks. See eye care system in principle, and not the most perfect maintenance system, some of the cleaning solution may be effective, but it will cause allergies in some people's eyes irritation, so when you buy contact lenses, be sure to ask the most suitable habits and physical condition and maintenance systems, and do not care for any mix of different systems, in general, selecting a maintenance system should pay attention to several points: health authorities through inspection approval. Safety to the eyes, no allergies, irritation. Good cleaning effect. Can be completely sterilized. Deproteinised good effect. Fit your lifestyle. Simple and easy to use. At reasonable prices. Specifically:
hand scrub lenses: If you do not like the general dirty clothes after the first scrub, directly thrown into the washing machine, is unable to remove stubborn dirt same reason, contact lenses must be handled scrub more than 30 seconds in order to achieve the cleaning effect. Study reported that by the hand scrub the lens, is more effective than any machine on the lenses to remove impurities and sediment. In addition, no clean tap water or boiling water disinfection, can not be used to clean contact lenses.
periodic replacement contact lenses: contact lenses Unlike glasses lens, then the perfect way of cleaning and maintenance, there will still be a little residual microorganisms on the lenses. Even though infrequently used, the lens material after 1 to 2 years later, naturally become old, you should discard the new ones, to prevent eye injury.
contact lenses can not be placed in physiological saline save: saline without sterilization, used to hold the lens, easy to breed bacteria that cause eye infections.
[4] maintenance solution or physiological saline. Go week in and week tear protein contained protein ingredients can easily adhere to the lens, and very stubborn deposits on the lenses, even daily cleaning can not be completely removed, but the longer the more difficult to clear the backlog, make eye redness , photophobia, lens discoloration, irritation of the eyes of the immune system to produce antibodies, causing the "Big protruding conjunctivitis" and other diseases. Clean the film to the protein enzymes, can break down protein structure, chopped, to eliminate adhesion to achieve the cleaning effect. Protein usually go once a week to work. Maintenance dazzling sunglasses sunglasses lets you active in the sun, good freedom. In fact, sunglasses resist the sun, can not stop the pollution damage, so be careful care, lest face embarrassing Oh. In fact, maintenance methods like sunglasses glasses general maintenance, cleaning, closed stack, storage should be a habit. But sunglasses often Tuotuo Dai Dai, accidentally scratched, so there are some small details to remind you to: sunglasses tainted adheres, do not use nails to pull, it's easy to scratch the wound surface. Do not wear sunglasses, many people will easily hung on the head, neck or pocket, then the body's range of motion do not be too large, in order to avoid tearing or crashing. Or someone will put handbag, recommend that you first put in a hard glasses case, and then into the bag to avoid being the key, comb, copper and other small things wear lenses, or catching lipstick and other cosmetics. Whether you are in the sun glasses collection where you want to be sure to remember the mirror up. Edit this paragraph maintenance framework to keep clean: sweat or skin oils on the metal part of the frame is easy to have a corrosive effect, daily cleaning glasses, very helpful in prolonging the life of glasses. Avoid the sun: a long exposure to the sun on easy place to break down due to frame in light and heat, easy to fade. Proper lens cleaning: Using special glasses cloth. Do not hit a hard object lens, do not wipe the lens with your fingers, use a clean cloth to wipe the mirror, reducing lens wear. Correct storage: Do not towards the front of the lens decentralization. If not, try to put glasses box, if wearing glasses when the glasses with a lens cloth wrapped, into the mirror box to avoid damage. Edit this paragraph lenses category 1 anti-reflective protective lenses This lens is coated with a thin layer of magnesium fluoride to prevent light reflection, allowing you to see things more clearly and without light interference. To test whether your glasses with anti-reflective protective lenses really, glasses can be aligned with the light source, if you see a purple or green reflective, it means the lens does have anti-reflection coated with a protective film. 2 color lenses are called "dyed lens", that is, the lens production process, with some chemical substances, so that the lens showing the color to absorb specific wavelengths of light. This is the most commonly used lens sunglasses type. 3 coloring lens with this lens effect of rendering the same color lenses, only made in different ways, it is the color applied to the surface of the lens, the most well-known is the "gradient-like coloring lenses," color is above deepest, and then down gradually shallow. Generally with prescription sunglasses are painted handle multiple lenses. 4 Polarized lenses in order to filter the sun shone on the water, land or snow equality dazzling light direction, perpendicular to the lenses to add a special coating, called polarized lenses. Most suitable for outdoor sports (eg: Seaside, skiing or fishing) is used. 5 color lenses was also known as the "photographic lenses." Because the silver halide in the lens add chemicals to the original colorless and transparent lenses, glare met, it will become colored lenses, do protection, it is suitable for both indoor and outdoor use. Glasses used to be a symbol of wisdom and culture. Because modern society TVs, computers and other inventions pose potential threats to protect the eyes, more and more people wearing glasses. People who wear glasses will often dubbed the four holes punched, this is the kind of people who wear glasses rude and disrespectful. In addition, people who wear glasses often protruding eyes. 6 aspherical lens to prevent deformation of the eyeball. There are more great visual effect. Antique spectacles antique glasses refers handmade, one-piece assembly made of old glasses, mechanical assembly line now

antique glasses

produced glasses not included. Glasses are exotic. According to research, the earliest glasses appeared in Italy, the history of the first one appeared like Tommaso bespectacled figure painting in 1352 in Treviso made things like Provence, then the equivalent of China Ming Dynasty Hongwu years. Data shows that glasses from the West into China is the mid-Ming, but large numbers of glasses should be the early Qing Dynasty, after Cantonese imitation of its style with crystal stone's. In the market to be able to find antique glasses, mostly the 1920s and 1930s of products, is characterized by sophisticated materials to gold as a raw material is the most common and, apart from platinum (Pt), purple, smoky quartz, tortoiseshell , copper, silver, ivory, both from the lens grinding to a convergence between the two lenses of the "bridge", including temples, carving patterns, etc., are all hand-crafted, which is the same as the earlier antique clocks, each pieces are fine craft handicrafts. Protect children's glasses glasses glasses are to ensure that children in the use of high transmittance fundamental measures. Glasses to protect first, glasses storage should be appropriate to temporarily remove the glasses do not wear, do not allow direct contact with your desktop glasses, glasses in the frame that is so recovered arms, feet, arms down, the lens facing upward. If you sleep at night, to put glasses box glasses to prevent lens wear, crushed, broken, glasses box must not be too soft, or long-term squeeze, can clamp arm (temples) deformation, to wear a certain oblique degree of visual impact. Second, pay attention to rub spectacle lenses to prevent wear and tear, dust or dirt on the lens when used flannel or silk graze, it should not make clothes, fingers, wipe or anything, because it will wear lenses, reduced transparency, If this trend continues, it will be like glasses, like a layer of opaque mist obscured, if there is oil on the lens or other dirty things, to make Kazakhstan one breath dirty wet cloth and then gently wipe the lens with a wipe, must not be a hard moment , or something with a hard scratch.

optometry

children in sports or do other strenuous activities, to remove glasses, put glasses box. Children's glasses if damaged, or eyeglasses for vision correction can not achieve normal, we must promptly to the hospital for examination, optometry, re-wear the right glasses, so as to protect children's eyes. Suitable size of the child to wear glasses, the main role in the treatment of the eye, but also play a role of beauty objective. Frame the right size is directly related to the improvement of children's vision, vision development. According to Children's lively, active features, frames and more use of plastic, or made of plexiglass. This frame gutter wider lens securely installed, soft, child wear comfortable, but also difficult to damage, fewer children indirectly eye injuries occur. Moreover, it is cheap, is welcomed by the public of the frame. Frame size should be appropriate, some parents and children think bigger frames look good, there are also a small number of frames that is not easy to swap, these are not comprehensive. Because children eyes pupil position is on the center of the spectacle lens (optical centers), and to maintain the surface of the lens and the eye in a position 12 mm, to play a good correction, therapeutic effect. If the frame is too large, children's eyes away from the optical center of the inevitable, biased glasses inside, there prism effect, causing children to binocular vision blurred, decreased vision, eye pain ache, headache and other symptoms of fatigue, increased refractive errors development, if the frame is too small, the eyes will tend to the outside, also away from the optical center of the lens, a long time because both sides of the mirror legs pressed against the eye bone, temporal side of the face will also affect the normal development of children's eyeglass frames should therefore in accordance with the Children's skull, facial and orbital eye development was appropriate selection of their frames, and with the continuous development of the timely replacement. Although contact lenses and maintenance solution innovation, but because of problems with contact lenses has not thus reducing the number of people, data analysis, between 1992 to 2006 cases of bacterial corneal ulcers found that up to 45% of patients, are the lens care out of the question, where nearly Chengdu Pseudomonas aeruginosa infection. Contacts First, you must choose the right contact lenses can keep the eyes shiny and comfortable. Suggest that you refer to the following measurements vision need to find a professional ophthalmologists and optometrists: myopia and corneal curvature measurements should strive accurate. Examine their work habits: usually people who need to see distant objects, such as drivers, pilots flying, etc., need to be more precise examination, especially the deployment of astigmatism. Seek medical examination. Professional eye doctor will help you to do a detailed inspection to determine the appropriate types of contact lenses. For example, many people in order to get rid of dry eyes troubled, buy high water content contact lenses, "This is the most common consumer purchase contact lenses myths," glasses Monopoly expert explained, the water content is high indicates high water absorption, lenses To keep moisture degree, will absorb moisture surface of the eye, causing serious water shortages eyes. Moreover, will increase the chances of infection. Contact lenses after the adsorption of tear evaporation, have more protein and sediment accumulation, "fueling the growth of bacteria." Dry eyes, tears secreted less people should choose water content greater than 50 contact lenses, contact lenses because of the high levels it will absorb the tears, let cornea more dry. Basic maintenance effort can not be less choice for maintenance of fluid and proper maintenance is also very important. Contact lens care solution dazzling market, how to choose? To see whether the Department of Health license number, if after the approval of the Department of Health Medical devices will lose Zi No. xxx. Asked the clerk to select the most suitable to wear contact lenses material of medicine, "the best choice for sterilization macromolecules potion ingredients," 4inLOOK contact lenses Monopoly expert explained, small molecules syrup easily stuck in contact lenses, and then slowly released, Instead damage corneal epithelial cells. Preferably containing citric acid to the protein composition of the syrup, 4inLOOK contact lenses monopoly Experts note that the number of charges to use neutralization, ion substitution effect maintenance solution, compared to the chemical nature of the protein components to reduce irritation. Is a hard or soft good good? From the perspective of an ophthalmologist, hard contact lenses correct astigmatism and myopia is better, especially for high astigmatism and irregular astigmatism person. And the higher oxygen permeability rigid glasses, easy to cause corneal hypoxia, "is a more healthy choices," 4inLOOK contact lenses Monopoly experts said frankly, but because after wearing a foreign body sensation, public acceptance lesser extent. The high water content of soft contact lenses, comfort better than corneal lenses big, not easy to fall off and shift lens, the more popular the past, soft contact lenses by increasing water content increased oxygen permeability and comfort, but relatively increased risk of allergies and infections, the latest silicone hydrogel material, oxygen permeability up to 100 or more, and almost hard, is a good choice. In addition to the right to buy, but also to do for maintenance: maintenance instructions in accordance with syrup. Maintenance fluid bottle demands focus is not the same, the difference does not necessarily have the so-called good and bad, "In fact, proper maintenance, you can achieve the same cleaning effect," 4inLOOK Monopoly experts recommend contact lenses in accordance with the instructions to use various brands, such as hydrogen peroxide syrup soaked at least 6 hours, and the general maintenance of liquid is best after multifunctional scrub, then maintenance 4 hours to be effective. In addition, we must pay attention to the date of manufacture and maintenance of fluid retention period, do not use expired medicine. Maintenance solution within three months after opening that is to be discarded even if unused, it is best not to continue to use. Regular replacement contact lenses, extended wear contact lenses, including hard, it should be 1 to 2 years to update. Also, do not throw daily disposable when biweekly, monthly or biweekly throw throwing their own extended period of use, will hurt the cornea. Fixed to the protein. If the use of hydrogen peroxide solution, you need to go every day and then soaked in syrup protein; while the use of multi-person maintenance solution, it is recommended to go weekly protein, reduce chances of infection. Lenses should not be placed in physiological saline saved. No bactericidal effect of physiological saline, to save the lens, easy to grow bacteria. Save boxes cleaned once a week at least every three months fixed replacement, to avoid becoming a breeding ground for bacteria breeding. Cleaning methods you can use cotton balls dipped in a small box cleaning liquid to wipe the surface, and then into the hot water above 79 ℃ disinfected, and then air-dried, try not to put the bathroom, because the moisture is easy to mold. Lens not a long soak in the syrup, the syrup will gradually lose its disinfectant function, but has become a hotbed for breeding bacteria. Infrequently who wear contact lenses, the best two days to replace a soaking, but remember to re-sterilize before wearing clean again. Swimming, do not wear contact lenses. Because the pool chlorine, bacteria, impurities, etc., will be attached to the contact lens, corneal tissue injury or cause infection, and even corneal ulcers. If you see a new product launch or as a friend, you want to replace the syrup, the syrup must pay special attention to the new situation after use, such as redness, itching, foreign body sensation or dryness, tearing, discharge, etc., you must first stop wearing confirm the eyes or syrup, if it is caused by medicine, we recommend disabling, back to the original medicine. Edit this paragraph can not be as suitable spectacles optometry optician based computer seventies of last century since the development of computer optometry are objective optometry, optometry for this machine is optical, electronic, mechanical combination of the three instruments, the principle and Retinoscopy basically the same. Another use of infrared red light and fog, as the device automatically adjust the eye to achieve the purpose of relaxation. Its operation is simple, fast, optometry technology is a big step forward. But all kinds of computer optometry machine will inevitably have some errors, although the use of infrared light and fog, as the device automatically adjust to relax, but not completely eliminate regulation impact, especially teenagers adjust very strong, simple to use computer optometry often inaccurate. If you do need to use the computer optometry, optometry mydriatic eye drops should be used before anesthesia ciliary before proceeding. Computer optometry result in errors mainly high myopia, astigmatism axis poor place. Therefore, computer optometry result can only be done for clinical reference, not directly as a prescription. After going to insist on wearing glasses often while suffering from myopia myopia has been confirmed as true, the degree of 100 degrees or more, you should wear appropriate myopia be corrected. Once the optician, in addition to wash and sleep outside should wear it, because myopia patients wear appropriate glasses, in emmetropia state regulation and vergence functional recovery of the natural relationship. Wearing glasses is not only to improve vision, but also in studying and working within an appropriate distance, so vergence eye regulation and function of normal and harmonious relations between, to avoid eyestrain. Wearing the correct degree of deepening degree of myopia can slow the development of wearing glasses or not and there is no direct relationship. Myopia wear the right glasses, pay attention to eye health, myopia will stabilize at a certain level. But If you think everything will be fine with the glasses, usually pay attention to eye health, continue to make the long-term state of fatigue eyes, still can cause vision loss, myopia. In addition, wearing glasses with inappropriate will increase the burden on the eyes, so vision loss, the degree to deepen. Some high myopia (over 600 degrees), whilst insist on wearing glasses, but the degree will deepen, accompanied by fundus changes, medically known as pathological myopia. Such myopia and myopic degree and family-related, with nothing to wear glasses. Spectacles notation: S: indicates spherical lens, (-) when myopia, with (+) when hyperopia, presbyopia use; C: represents the cylindrical lens, astigmatism using; DS: Mark spherical lens to focus light Edit this paragraph degree view glasses glasses should generally be accompanied by

"Silver fucking dummy" in the new eight

often wear, because the refractive errors of the eye glasses become normal, normal eye can get close to or who should have the ability to . Wear the right glasses, everything will change, providing close to or reach a normal child should have the prerequisites that may help him become a broad-coming talent, do not underestimate the role of glasses. Hyperopia, the eye when reading to be more than normal with a different degree of regulation of force, prone to visual fatigue, to see the word appear blurred, tired eyes, eye pain and even headaches, irritability and other symptoms, and therefore can not be sustained reading, affecting work, study. Significant astigmatism who have similar symptoms, elimination of symptoms after wearing glasses. So whether it is nearsightedness, farsightedness, astigmatism, coupled with the general should always wear glasses. Many patients with myopia often heard it said that wearing glasses myopia will increase, the degree will be more deeply, rather than always wear glasses. In fact, this argument and the practice is wrong. People suffering from myopia, because parallel rays entering the eye focuses in front of the retina imaging, so it is unclear to see distant objects. Such as wearing a pair of glasses, you can move back to the retina of the image, just fall on the retina, so to see distant things clearly, and cause eye fatigue is also less chance. Suffering from myopia to wear glasses after the myopia is generally not deepen, because myopia is aggravated with glasses unrelated (but not, except in accordance with the degree of glasses). Some patients with the glasses, while wearing, do not wear while doing so just as easily lead to eye fatigue, aggravated myopia. Labor protection class glasses are anti-red

 

Labour Protection Eyewear (3) strike glasses, goggles, electric welding glasses. anti-impact glasses are mainly used in laboratories, operating rooms and other occasions. goggles are used in windy situations, such as desert areas etc. electric welding glasses are used for electric welding operations to protect the eyes.