According to international standards, allowing through glasses of UVA should be below 10% UVB and UVB should not be through, otherwise damage your eyes, but it can be crystal lens through ultraviolet UVA about a hundred ninety-thirds through ultraviolet UVB about 90 per cent, so if the advantage to compare with the purpose of raising the disadvantages of UV damage, it is not worth the candle, and ordinary optical lenses, high refraction Tiffany and Co Charm Bracelet Jewelry Outlet glass lenses, coated lenses and so on UV absorption and interception capabilities, comparatively speaking, the optical properties of crystal glasses is far better than ordinary optical glass, quartz crystal is a plus, and more with irregular internal impurities, between cotton flock corrugated, non-homogeneous medium , and has a birefringence effect, so that the formation of double vision after the refraction of light, causing blurred vision, so it is natural crystal or artificial crystal, are not suitable for glasses.
Behind the 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. Maintenance methods like Tiffany and Co Necklace Jewelry Outlet Store sunglasses general maintenance, cleaning store should be a habit. But sunglasses often Dai, accidentally scratched, so there are some small details to remind your sunglasses tainted adhesion, it can not use nails to pull, it's easy to scratch the wound surface the. When not wearing sunglasses, many people will easily hung on the head, neck or pocket, the body's range of motion at this time do not be too large, in order to avoid tearing or crashing. Or someone will put in the bag, we recommend that you put in the hard or the first glasses box, and then into the bag, so the lens is worn keys, comb, copper and other small things, or catching lipstick and other cosmetics.
Car owners are wearing sun glasses, do not wear often easily on the dashboard or on the seat, this is a very bad habit, hot weather will not baked prototype Fake Oakleys Frogskins Sunglasses Cheap for Sale sunglasses, especially plastic frame especially , preferably with off or collection box placed in the glasses. Many people like to wear sunglasses to reduce sun damage to the eyes. Eye experts remind everyone, be sure to choose acceptable quality sunglasses, a low-quality sunglasses not only can not resist ultraviolet rays, but also give the eye cause great harm. Whether wearing sunglasses, mainly in the strength of the sun's rays to be, not simply in the season to be.
If the UV intensity is large, you need to wear Cheap Mac Cosmetics Makeup wholesale Outlet sunglasses. If you select an inferior, substandard sunglasses, not only can not resist ultraviolet rays, but will also expand the pupil of the eye, the eye lens consume more UV rays. Choose sunglasses must pay attention to their health functions. Is there an anti-UV sunglasses function, we can not distinguish with the naked eye. Eye experts recommend the product factory express concern commitment on the labels of products you can see explicit formal identification. In order to protect the health of the eye, you can choose lenses with UV protection sunglasses made functional, try to eliminate the wavelength ultraviolet light. Lens color gray, brown, green is good.
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