Yellow lenses can absorb ultraviolet light and allows infrared and visible light to penetrate the lens. The biggest feature is the yellow lenses absorb most of the blue. Because when the sun light over the atmosphere, mainly blue performance. After the yellow lenses absorb blue light can make the scene more clearly the nature, yellow lenses used to as a filter, or hunters use when hunting. However, no one can prove shooter because wearing yellow Cheap Oakleys Frogskins Sunglasses Outlet glasses, target shooting and therefore better results. Human self-preservation instinct, his eyes encountered light, the pupil will naturally become smaller, making the reduction of UV energy entering the eye, once put on glasses without UV protection function, make dilated pupils, plus the glasses no effect of UV rays, then the door wide open eyes equals, despite the UV into the eye injury can be imagined.
Sunglasses can block UV rays, because the lenses add a layer of special coating, which not only inferior sunglasses can block UV rays, but also to a serious decline in the lens transmittance, making the pupil larger, but will be a substantial injection of UV, making eye by loss. In addition, poor quality lenses also make nausea, forgetfulness, insomnia and other symptoms of visual fatigue. Sunglasses color to light gray, brown or smoke color is superior, followed by green, amber, blue, red, and use only as the sun or snow. Car is best to use polarized sunglasses, because they can decrease glare. If you wear sunglasses, others can very clearly see your eyes, and then your lens color is too shallow. When the sun goes down, it is best to remove the sunglasses; otherwise, we are affected vision in low light areas will.
Should go to regular optical shop choose the regular manufacturers have to get Discount Oakleys Flak Jacket Sunglasses Cheap sunglasses with UV protection. Note that the lens surface conditions selected. Who face a more slender fit round frame sunglasses? Medical experts suggest that when buying sunglasses, according to the visual clarity of judgment. To buy quality sunglasses, the only way to do that is to the optical specialty stores, regular optical shop to buy sunglasses. Now on the market is divided into light-colored sunglasses, sunglasses, sun sunglasses and special sunglasses three. When selecting sunglasses, first look at shops, the best-known optical shop or mall to buy. Quality inspection department store after a comprehensive assessment glasses hanging in front of the store "quality fixed service units", so there are more than a dozen stores in the city. Second, consumers should settle the color of sunglasses. From the optical point of view to consider, experts recommend brown, gray and green sunglasses, because these types of colors to UV help, but will not cause visual color deviation when worn.
The roles of color are too light filtering sunglasses difference, too deep and affect vision. There is a trick consumers wearing sunglasses in the mirror in the selection, can vaguely see the color of moderate depth description of the pupil. Finally, to remind consumers of sunglasses surface quality, good lens surface should be clean and flawless, no bubbles and ripples. Consumers can put off to the front of the lamp Tiffany and Co Bracelet Jewelry Outlet sunglasses look, if things like distortion, indicating a problem with the quality of the lens. According to face, face width, sunglasses should choose a little larger; narrow thin face, thin edge of the frame should be selected, and some ingenious. According to color, color depth, should choose brighter colors; color white, then what colors to wear glasses are very nice. For sunglasses can effectively block the summer strong light, color glasses because there is enough depth, but ride or drive, do not choose too dark lenses.