First look in the mirror when you buy Cheap Oakleys Frogskins Sunglasses Outlet sunglasses UV protection and retaining bright light features, and then look at the styles and prices. Should pay attention to the following six points:
Blinkers are not equal to sunglasses, see UV logo. UV wavelengths below 400 nm, sunglasses when the election should recognize the "UV400" logo. There is this identity that resists ultraviolet rays. Some sunglasses will identify "UV" or "100% UV" and so on, this also indicates that the UV feature. No such identification do not buy. You tinted glasses on the market many, many people think that as long as the glasses have a color out of the Sun, is the sunglasses. In fact, this is a misunderstanding. UV blocking sunglasses alone two most key features, mainly out of the glare of the color of the lens, so that people cannot see the glare, and whether UV protection has nothing to do with the color of the lens, depends largely on the lens material and coating. If just styles pretty or cheap, buy a pair of no anti-UV spectacles worn, greater harm than not wearing mirrors. Because self-preservation reactions of the human body, his eyes when strong light, the pupil will narrow, enters the eye UV reducing, but wear no anti-UV spectacles, eyes received light intensity diminished, the pupil enlarges, whereas UV intrusion.
Lens shading medium is preferred. Lens color light, blocking glare capability will wither away, to the sunny activities will still glare does not apply. Lens color is too dark can affect, even interfering objects, and can't tell traffic lights. In General, medium-depth color sunglasses, you can meet people daily needs.
Lens specific colors without affecting the objects themselves, ensuring eye comfort, Market Sunglass lens colors are many, there are Brown, gray, green, but there are red, yellow, and so on. Strong sunlight will make you look uncomfortable, concerned primarily with yellow light on eye irritation. In General, dark brown, grey, green, yellow block the ability of the lens, Specific colors can be a matter of personal preference may be, but regardless of which color lens you choose should be seeing color distortion, can effectively identify traffic signals, eye feeling as the principle.
Lens surface is smooth, without ripples, bubbles, galling, see without distortion. Sunglasses are a flat mirror, lens curvature surface treatment, bending, diopter has strict standards, in particular the diopter to within 0.008. Only in this way can see without distortion. Otherwise, wear Discount Oakleys Flak Jacket Sunglasses Cheap sunglasses that exceeded the diopter, eye irritation, dizziness. Simple way to judge the quality of lenses, is to get a pair of glasses in front of around a slow-moving, whether through the lens object deformation, it is best to Watch pane, line-shaped objects such as door frames, if the line curves, then the lens diopter failed, not to buy. In addition, you should also note the lens surface is smooth; there should be no ripples, bubbles, galling.
Frame is too large. Current frame sunglasses are very popular, very popular among the young. But the size and style should be based on individual eye glasses and face may be. Generally, as long as the eye of the lens covers, completely blocking the sunlight on the line, there is no need to keep up with trendy choice picture frame great sunglasses. Sunglasses oversized, heavy frame constricts the infraorbital branch of trigeminal nerve, generally wear such glasses 1-2 weeks after lead acid eye swelling, orbital or two slow cheek numbness and sensory discomfort, bad for eye health.
Crystal lens no UV protection. Brown Crystal glasses sold in street stalls or shops popular with middle-aged and elderly friend's affection. In their view, with the Crystal glasses are beautiful. In fact, Crystal glasses without any UV protection features should not be used as sunglasses.
Adult sunglasses for children should not wear
Dark and Interior please take off sunglasses
" All in all, selection of sunglasses, be sure to select a regular factory product to normal optical shop. “The eyes of children more vulnerable than adults and more stands up to UV rays, and outdoor activities, especially bearing in mind that eye. But children should not use adult sunglasses; regular factory production should be selected to professional optical shop of children's sunglasses, which will guarantee its quality and safety.
When using sunglasses, in addition to attention to hand pick wear, preventing deformation of frame effects, lens scratches and avoid friction, but also pay special attention to wear sunglasses must occasion, location, do not always wear. Cloudy, dark, and in-room, there is no need to wear sunglasses. Some people regardless of occasion, location, regardless of sunlight, strong or weak, in the dusk, evening, or even wearing tiffany and co outlet sunglasses when watching movies, TV, and this will inevitably increase the burden of eye, caused by eye muscle tension, fatigue, vision loss, depending on the blur, or even does not apply, such as dizziness, glaucoma patients also aggravated his condition, has to be extra careful.