The choice of sunglasses, sunglasses present many styles of glasses, in addition to block the sun's harmful UV functional role, more importantly, with increased luster to our appearance to remind you, with sunglasses mostly select styles However, in fact, according to the material and performance point of view, lenses that are mainly two categories, that is, reflection and absorption. (Recommended reading: What is the difference between the polarizer and sunglasses?)

Reflex film on a layer of silver and chromium-plated surface of the lens, since the reflective glare and harmful rays. Welcomed by the majority of people are based on absorption, optical glass, some metal oxides; or plastic lenses dyed a variety of colors, which play attenuation, absorption of the role of light. Ray Ban Outlet sunglasses color green, tea, gray, and blue, yellow, amber. The experts pointed out that, for most people, the best sunglasses color is gray and green. Gray for visual physiology of the eye, the scene is more fax, color (such as red, yellow, green is not easy to distinguish) the slightest, the most appropriate to be used for general outdoor activities. The rest of the colors have their own characteristics, such as brown, is a warm color that can help you see farther, see the outline of the scene, without the blue sky and water, used in aviation, marine and tourism mountaineering. Amber can see through the fog frost, high contrast and increase depth of field vision, clearer scene, should be the purpose of hunting, outing purposes. Motorists should not wear blue lenses, so as not to not tell the traffic signs on the road. Following the golden sun glasses on the market launched on concentrated under short and concentrated up and down, light in the middle of sunglasses, the former applies to driving, conducive to tourism climbing up the stairs; wear which applies to boating and fishing, the upper blocks sun, a lower light reflection on the water can be weakened.

If you want to know of lens color depth is appropriate and easy way: Watch the eyes in the mirror, looming on the horizon, it is appropriate to wear Cheap Ray Bans sunglasses, in the case of a well-lit; if you can not see, the color is too deep.

Cheap Ray Ban Sunglasses are generally plain. To identify the quality of lenses good and bad, can be armed with sunglasses up and down and move around in front of objects viewed through the lens meters away, if the base is good (plain); images were moving along and against the move, is a difference; images irregular movement is even worse for the poor quality of glasses. Need to pay attention to the style and how the face with the purchase of sunglasses. For example, the square face should not choose a square frame sunglasses, can be used on both sides of the slightly oblique, with a circular frame below. Round face should avoid wearing round sunglasses, should choose both ends of the tilt of the thumb to the tip of brow frame. “The oval face” not good has one's eyes tested and wears glasses two side upward unwrapping the mirror holders, selects dexterous and Lei Penguin suitably the sunglasses. Elliptic face being suitable has one's eyes tested and wear glasses the frame broad sunglasses, like this then has opens up the face, “the reduction” the face length feeling.