How to choose sunglasses - 2013-03-18 19:43:36

Inferior sunglasses both see and could not withstand ultraviolet As a result, pupil dilation, the lens of the eye to more ultraviolet intake, so be sure to choose a reputable store to buy. Buy sunglasses should pay attention to?

1 The first observation of whether the lens scratches, impurities, bubbles, stripes, check the packaging of sunglasses, the regular sunglasses should be marked with the name, color, diameter, quality levels, production and the name and trademark, mirror or tag indicated anti-UVAUVB and CE mark sunglasses to ensure barrier ultraviolet.

2 to try to wear when purchasing sunglasses have dizziness, headache feeling. Now there are also some marked degree of myopia sunglasses sale, but because the IPD and other indicators vary, so if there is no professional guidance, consumers are best not to choose this degree of sunglasses.

3 sunglasses holding two corners facing the fluorescent light, the reflective mirror smooth scrolling, specular reflection of the fluorescent film appears wavy, distorted shape, prove that the lens is not flat, so the mirror can damage eyesight.

4  lens should be even higher through clarity, sunglasses made ​​of glass and resin, and the best sunglasses polarized lenses should be used. It uses and made ​​of a contact lens as light precision of the synthetic resin sheet by the seven synthesis, the outermost two layers are superhard abrasion-resistant layer; second, six shatterproof reinforcing layer; third, five ultraviolet filter layer, most middle layer is a polarizing filter layer. Polarized lenses can effectively filter out harmful ultraviolet rays of the reflected light, shatterproof, wear and other functions, is the most popular sunglasses.

5 Color of sunglasses with based on their skin color, face shape, wearing, should be based on and out of places to choose. In general, black, brown, gray filter effect is good; gray lenses absorb any chromatography can be balanced, to see the scene after wearing glasses will darken and not have obvious color; tinted lenses filter out a large number of Blu-ray, can improve the visual contrast and clarity, wear the best effects in the case of air pollution is serious or more fog.

6 sunglasses What color shades for us? Simple self-test method is to wear sunglasses mirror, and can be seen to vaguely pupil limit. Pale colored filter function is too small; affect vision has also weakened the sense of color too dark. Colorful light-colored sunglasses popular this year, do not use the beach water sports, a highly reflective snow and sunshine is very strong sun, but should wear sports sunglasses, most of them with bright colors saturated color, can absorb or reflect more visible.

7 Wearing sunglasses in addition to reduce glare stimulation, so that the eyes comfortable, the main purpose is to prevent ultraviolet damage to the eyes and lens colors with UV protection are two different things, even if the lens color is deep, and may not be able to effectively anti-UV, so be sure tochoose marked against UV lenses. Usually sunglasses UV index is between 96% -98%.

8 general regular optical shop will detect the sunglasses UV resistance size instrument, by this test, you can know that the hands of the glasses is the health of your eyes.