Colored glasses do not mean sunglasses

This summer, cheap oakleys sunglasses popular wide lens can cover a large part of his face, and the lens color is more diverse. But the street selling colored glasses and sunglasses are essentially different, when you want to live in the purchase of quality.
Last summer, the Quality Supervision Bureau of the sunglasses market for a quality sampling, with a pass rate of 78.4%, inferior products without anti-ultraviolet function, wear these sunglasses is equivalent to wearing a transparent lens of the eye did not achieve the protective effect; what is more, can cause nausea, loss of appetite, forgetfulness, insomnia and other symptoms of visual fatigue.
Many young people choose to boutiques, jewelers buy sunglasses. - Deputy national regulations are in line with the standards of sunglasses, the price at least in the 250-300, and some designer sunglasses in the thousand or so, regular sunglasses should have "uv-400" word label, and consumers can call tag telephone inquiries on the authenticity of the product. Boutiques, jewelry stores and different professional optical shop, sales are not sunglasses, but purely decorative spectacles. The sunglasses are a high-tech goods in the non-glasses store to buy sunglasses may exist - given the quality problems. Consumers buy sunglasses professional optical shop to try and understand the product identification.
Red, yellow, purple, green is the sunglasses do? In the past, the main color with dark brown sunglasses and dark blue, and this year, the market appeared colorful colored glasses, some people think that oakley sunglasses cheap tinted glasses, but especially cool to wear, so have chosen to jump on the bandwagon. In fact, this is a misunderstanding.
Experiments show that, because of the color of different colored glasses, the eye itself does have a protective effect, but because of itself cannot block UV rays, they lost the function of sunglasses.
If you do not wear a UV feature tinted glasses, is more dangerous than not wearing sunglasses, because the human body has a self-preservation instinct, eye encounter light, the pupil will naturally become smaller, so less energy ultraviolet light entering the eye, once wear glasses without UV protection function, make dilated pupils, plus the glasses do not isolate the role of ultraviolet light, when the eye is equal to the door wide open, despite the UV-invasive, and greatly increased energy, damage to the eyes can be thought of conceivable.
Sunglasses can block UV rays, is added a special coating on the lenses. After lens coating, while blocking and absorbing UV rays, blocking part of the light, light transmission lens is reduced. Generally of good quality sunglasses, UV-blocking ability, transmittance decreased and small, does not affect the general visual clarity, and lens coating has a certain hardness, surface easy to wear.
Quality sunglasses is completely different, not only block UV performance is not strong, the film easily damaged, and a serious decline in the lens transmittance eyes as if seen in the dark matter, then the pupil becomes large, the remnants of a large number of incident UV but will the eye, the eye damage. Furthermore irregular surface of the lens, see external objects deformed distorted, making eye soreness, the gradual emergence of nausea, loss of appetite, forgetfulness, insomnia and other symptoms of visual fatigue.
In view of this, when you buy sunglasses, you can see if it is clear to judge. For the general public, to buy high-quality sunglasses, the only way to do that is to the optical specialty stores, regular optical shop to buy discount oakley sunglasses.