(1) the ultraviolet prevention functionA pair of sunglasses ultraviolet prevention function, we won't be able to identify with the naked eye, the manufacturer of the product an express promise is consumer choose and buy sunglasses with protection function is the only reference, we can see in some of the cheap oakleys product label and glasses positive such as: "100% of ultraviolet prevention", "UV400", "uv blocking all", "anti ultraviolet express" logoCommitment on the product label, consumers should learn to protect themselves, keep the labels or instructions or good, or let the merchants marked on invoice, once a dispute, we would not be a lack of evidence and passive After wearing, produce traffic signals to identify obstacles, easy to cause traffic accidents Reach the surface of the earth the sun light (290 nm ~ 2000 nm) in uv accounts for about 13%, and more than 97% UVA, UVB (3%), UVC is close to zeroThe following four unqualified sunglasses don't wear:1, the wrong sunglasses uv protection function
2, the rate of perspective, unqualified sunglasses Need to pay attention to when using the glasses, can be used outdoors, but you'd better switch to enter indoor common glasses, because this kind of glasses perspective rate is insufficient, can increase with eye fatigue, thus affect visionExperts remind consumers, buying sunglasses should try to choose high quality polarized lenses This glasses color has a cheap oakley sunglasses lot of, when the choice must pay attention to the tea tablets, grey, light green wait for color of the lens is the most suitable2, the rate of perspective, unqualified sunglasses
Ultraviolet radiation to the human eye damage is mainly determined by the wavelength of ultraviolet radiation, radiation time and intensity of their own defense mechanism and human eyes, on the strength of the cornea and the lens are the most common eye tissues by ultraviolet radiation damage, sunlight keratitis and corneal endothelial injury, daylight cataract is the most related eye diseases With uv protection function of sunglasses, the eyes are like in a dark room, at this point the pupils get bigger, the remnants of ultraviolet radiation will be raking in eye, make the eyes hurt Believe the elder brother of the sunglasses, there is room have a car have beauty!Dyeing ordinary myopia glasses sunglasses are actually common myopic lenses have the color of the sunglasses, can help to stop the strong light The best option is to buy sports glasses myopia fake oakley sunglasses frame Ancient documents describe the use of such crystal sunglasses by judges in ancient Chinese courts to conceal their facial expressions while questioning witnesses
Can be used as emergency equipment to in outdoor activities and contact lenses to replace worn, convenient and safe Sunglasses is generally divided into three classes, namely for sunshade sunshade glasses, for decorative light lens, and is used for snow goggles or waterproof surface radiation special glassesWith shades of red, his shocking quotations, to a more controversial4 Can be used as emergency equipment to in outdoor activities and contact lenses to replace worn, convenient and safe
These, however, appear to have worked rather like mirrors Protection from the Sun's rays was not a concern for him Can be used as emergency equipment to in outdoor activities and contact lenses to replace worn, convenient and safeC discuss] and early 20th centuries because sensitivity to light was one of the symptoms of the diseaseExperts remind consumers, buying sunglasses should try to choose high quality polarized lenses