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What should you pay attention to when buying sunglasses? _Sunglasses knowledge_

by:Eugenia     2022-02-23
In real life, in addition to the sun's rays can emit ultraviolet rays and a variety of harmful glare, some fluorescent lamps, fluorescent lamps, etc. are all sources of ultraviolet rays. Therefore, whether it is day or night, both outdoors and indoors, it is possible to be affected by ultraviolet rays. Therefore, wearing a high-quality sunglasses in life can effectively block the damage of ultraviolet rays to the eyes. So what should you pay attention to when buying sunglasses? Let's take a look at it with the editor. <一>. Sunglasses are also medical device products. When buying, you should choose a merchant with a 'Medical Device License Operation Certificate, The varieties are very rich, which can meet the needs of most consumers. <2>. The lens is the core of sunglasses. The intact lens is a basic advantage of sunglasses. When buying the lens, check whether the lens has scratches, impurities, bubbles, streaks, etc., and whether the lens surface is coated with UVA, Signs of ultraviolet rays such as UVB. <3>. After checking the lens, put it on and try to see if you feel dizzy or headache. If not, check whether the lens is flat and the degree of dialysis is clear enough. Currently on the market, sunglass lenses are made of resin and glass, and better sunglass lenses should use polarized lenses. <4>. The color of the sunglass lens is preferably light gray, brown or light color, and then you can choose green, amber, etc. It is better to avoid blue lenses and yellow lenses, because blue lenses will absorb blue light, and Blue light radiation is one of the causes of macular degeneration. <5>. When choosing sunglasses, it is better to match them according to their skin color, face shape, and clothing to make the overall look more coordinated. At the same time, it is reminded that when it comes to the choice of sunglasses, it is better to use brown lenses, which can filter out a lot of blue light and improve visual contrast and clarity.
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