How to choose sunglasses not hurt eyes?

Summer, more and more people with oakley sunglasses cheap However, you know? Wear sunglasses best not to wear blue. Is this why it? In fact, the blue glasses are picked from a variety of light blue, and blue light on the extent of damage to the eyes no less, compared with the UV will cause macular degeneration eye disease.
Therefore, the best time in the selection of sunglasses, note the following points:
First, UV, because not all sunglasses are UV filters can.
On the choice of colors is the second, filter is a good choice of Blu-ray and complete color and brightness have little impact are yellow or grey.
In the selection of sunglasses, in addition to its style requirements, in color, many people often have this idea: sunglasses, the darker the better. However, this idea is really science?
According to describes, Sun mirror of main features one of is filter except UV, as long as is after UV processing of Sun mirror, UV index are can reached 96% to 98%, that is even light of Sun mirror, in after UV processing also will reached like dark Sun mirror as of anti-UV effect, therefore, Sun mirror anti-UV of features and it of color shades no is large relationship. Conversely, if long time wearing dark sunglasses, eye objects task, and fatigue. In addition, in the State is in a dark room for a long time, the pupil enlarges, wearing dark cheap oakleys sunglasses, the lens quality is not very good, the pupil magnification absorbs more UV, which would do more damage to your eyes may induce conditions such as cataract.
Expert reminder that should go with Brown, grey or green sunglasses, and then see if it has UV-resistant features. In addition, the spectacle of life is generally 3-5, consumers should be replaced with new sunglasses in time.
Sunglasses lenses including neutral color lenses, mercury, high contrast lens lenses, color lenses.
Neutral color lens: lets you see the true color of objects, is a fixed lens, for the ideal general purpose lens, protection and strong light, suitable for sports driving and outdoor workers.
Mercury lens: reflective coating on the lens surface and fully reflective, reflective of two lenses are water, snow and road movements are the best choice.
Color changing lenses: lens color shades as the lighting levels and weather changes, can be fixed to maintain high contrast effects.
High contrast lens: cheap oakley sunglasses can filter out the dispersion of Blu-ray, promote the contrast of colors, make the subtle Visual is more precise, best suited for driving and needed quick-response campaigns.