UV value is not the only criterion for judging the quality of sunglasses1

Now the weather is getting hotter and hotter, and the sun is dazzling. Many people wear sunglasses when they go out. However, the price difference of sunglasses available on the market is too big. Some are cheaper. A few dollars, a dozen dollars, and a few thousand dollars more expensive. What kind of sunglasses have good UV protection effect? u200bu200bRay-Ban RB4125F Men's Sunglasses 901 Black Roadside Stall Sunglasses Can prevent ultraviolet radiation? Faced with a variety of sunglasses, how should we choose? Everyone has their own opinions. Some people like more fashionable ones, and some want more comfortable ones. Many people value the appearance of the glasses and the affordable price when they buy sunglasses. Can the quality of cheap sunglasses in these stalls pass? If they don’t, how much damage to the eyes? Twenty yuan I can buy a pair of sunglasses. How about the sun protection effect of this kind of sunglasses? The uv400 on the glasses means the index of UV protection. Generally, the UV index must reach 385 to effectively prevent UV rays. Nowadays, when many people buy sunglasses, they pay attention to the uv value of sunglasses, thinking that as long as the uv value meets the standard, it can prevent ultraviolet rays from harming their eyes. In fact, some sunglasses with uv value up to the standard can cause eye damage. Ray-Ban RB4242 unisex glasses frame 6201/13 brown sunglasses selection misunderstanding: UV value does not mean that it can protect the eyes. UV value 400 is not the only criterion for judging the wearing of sunglasses, but also the comfort and transparency in the workmanship of sunglasses. Light rate is also an essential condition. The way to see whether the light transmittance is good is also very simple. As long as you wear the glasses for five to ten minutes, your eyes are not tired or blurred, and the light transmittance is fine. This has a lot to do with the quality of the lens and the coating on the surface. Most of the anti-radiation sunglasses sold on the market do not have this effect, because the price of anti-radiation sunglasses is more expensive, and a radiation-proof film is plated on the lens, and some of the more affordable ones will definitely not have this effect. In addition, many people generally believe that sunglasses should only be worn when the sun is sunny in summer when the sun is dazzling. This is actually wrong. Ray-Ban RB3016-M Men’s Sunglasses 1182/4E wood grain sunglasses do not mean that they can only be worn in summer. The intensity of ultraviolet rays may be stronger on cloudy days than on sunny days, so whether it is in winter or summer, Sunglasses can be worn with or without the sun. The choice of sunglasses is very simple: qualified and suitable After knowing so many misunderstandings, how to choose a pair of sunglasses that are of good quality and suitable for you? First of all, when buying sunglasses, you must check whether there is a qualified production certificate, and then look at this one. Whether the model suits your face shape depends on the quality of the sunglasses and the transmittance of the lenses. There is so much knowledge in the little sunglasses. When choosing the big ones, don't forget to refer to the suggestions made by the editor just now. Don't treat your eyes badly. Related reading: Sunglasses and glasses
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