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Summer how to choose sunglass?

by:Eugenia     2020-08-10
Summer how to choose sunglass? Now on the market a wide array of glasses, especially sunglasses. In the summer because the sun's radiation, many people will choose sunglasses to keep out ultraviolet ray, but it is need to pay attention to the choice of sunglasses here. 。 。 。 。 。 The following is for the & # 8220; Summer how to choose sunglasses & # 8221; Do a simple introduction.
the summer how to choose sunglasses, look at the following summarized 6
1, summer sunglasses to wear when the choose and buy did try the feeling of dizziness, headache. Now there are some marked degree of myopia sunglasses on the market for sale, but because of pd and other indicators vary from person to person, so if there is no guidance of professional personage, consumer is good not to choose this prescription sunglasses.
2, observe lenses have scratches, impurity, air bubble, stripes, check the packing for sunglasses, regular sunglasses should be marked with name, color, diameter, quality levels, production factory name and trademark, the mirror or tags are marked as both UVA and UVB rays and CE mark sunglasses can ensure that block uv. Sunglasses
3, with the hand of the two horns on the fluorescent lamp, mirror reflective article gently rolling, if it is found that mirror the daylight lamp shades appear wavy, twisted, prove that the lens is not flat, the mirror can damage eyesight.
4, the color of the sunglasses in addition to according to your own color, face, dress to match, also should choose according to in and out of place. In general, black, dark brown, grey filter effect is good; Grey lens for any chromatography can balance absorption, wearing glasses can see scenery will only after dark and do not have clear off color, Dark brown lens can filter out a lot of blue light, which can improve visual contrast and clarity, under the condition of air pollution is serious, or foggy wearing effect is a plus.
5, lens to level off, the definition, the sun lenses made of glass and resin, and a good sun lens polarized lens should be used. It USES as well as contact lenses and precision made of synthetic resin, synthesized from seven layer chip, two outside layer is hard wear-resisting layer; Second, six is shatterproof strengthening layer; The third and fifth layer is the uv filter layer, middle layer is polarized filter layer. Polarized lenses can effectively filter out reflected light and harmful uv rays, and resistant, wear, and other functions, is a popular sunglasses.
6, how to choose the summer sunglasses weight for us? Simple self-test method is to wear sunglasses, in front of a mirror for can vaguely see the pupil of his limit. Color too shallow, filter function is too small; Color is too deep, affect vision and weaken the sense of color. Popular this year the colorful light of the sun glasses, do not use water activities at the beach, reflective snow and the sun is very strong sun, and should wear sports sunglasses, most of them adopt the saturated color of color is gorgeous, can absorb or reflect more visible light.
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