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Introduction: summer is coming, everyone may have sunglasses, sunglasses today to talk about things and found someone wearing, some people do not wear, that in the end wear a good summer, after all, is it necessary to wear sunglasses? Here you can be sure to tell you that sunglasses must be worn, especially in the case of strong sunlight, not only for the beautiful, decorative, sunglasses have many benefits. The main function of sunglasses is to block the light and UV A sun glasses What are the main functions? One of the most important function of sunglasses is to block the light, to avoid harmful ultraviolet rays and other excessive light into the human eye, causing injury. If you wear sunglasses in the summer, the first: to reduce the eye's ciliary muscle in the light of the regulatory burden, let the eyes in the habit of looking at the natural light objects, this time is the most comfortable time for the human eye Second, sunglasses are not only designed to block harmful light, but they also prevent dust particles from entering human eyes during windy weather, which is to some extent the best haven in the eye . According to the experts' determination, since 96 years, the activities of sunspots have become more and more frequent, resulting in more and more damage to human body caused by UV light. Especially in the plateau regions of Qinghai and Tibet of our country, Therefore, people living in these areas should wear sunglasses in particular. Gray, green and tan sunglasses best pair of eyes Second, what color of the sun glasses best for the eyes? The earliest time there was only a large frame of sunglasses, the kind of large lenses, because it looks particularly like two frog eyes, so people are also called frog mirror, round, but also only one color, black, It is different now. There are several kinds like ours. What are the wide-brimmed, the narrow-brimmed, the squareed, the gardeny, the longish, the partialed, the more colored, the red, the green, the yellow, the amber, Blossoming, there are now more than 20 kinds of choices, but no idea, but not what color is good to the eyes In addition, your favorite sunglasses are not necessarily suitable for you, let's talk about sunglasses Color problem The current market, the production of sunglasses and myopia lens material is basically the same, but also sub-glass and resin films in two categories, but both processing technology is different, the glass lens sunglasses are mainly mixed in the glass material with some special absorption The nature of the metal salts, such as adding nickel and cobalt glass lenses purple, adding cobalt and copper glass lenses blue, and resin lenses sunglasses is mainly used immersion dyeing method, the lens is soaked in organic pigment Hot water which color, but no matter what kind of coloring sunglasses color must be beneficial to our eyes, so the face of the market so many colors of sunglasses, which one we choose in the end it? Expert: From the physiological point of view, gray, green, brown on the human eye is good, too deep too shallow are not good. Dark sunglasses are likely to traffic accidents due to poor recognition of traffic signals, the color of light sunglasses and can not block the role of the sun, our country currently only red, green and yellow sunglasses of three colors traffic signal recognition Ability to make strict rules, other colors and no relevant provisions, but here is a trick, you may wish to try it in the selection of sunglasses: that is, when the test must be purchased at the trial to see the size of the surrounding color change, small changes in color Sunglasses in general its color is more appropriate. Anti-UV resin lens materials better Third, what kind of material lenses, UV protection better? Many people think that the darker the sun glasses lens color more anti-UV, in fact, anti-UV sunglasses, and the color of the mirror has nothing to do with the production of the lens material, if the sunglasses in the production of UV-resistant materials added, then it Is the function of anti-UV sunglasses, such mirrors are generally sold UV logo, but due to the current processing technology limited to UV protection up to 97% of the sunglasses, simply can not reach 100%, so when you See the UV100% logo sunglasses, in fact, the name is not true. To determine whether the sunglasses UV, in addition to see if it has UV logo, you can also see whether the edge of the frame even if the lens is smooth, smooth edges for the resin lens material, the lens UV function more powerful, wave-type The edge of the lens is generally glass lenses, this lens is not only anti-UV function is poor, but also easy to produce degrees in the installation, it is harmful to our eyes. Sunglasses not only with the summer to bring four, sunglasses can only bring it with the summer? Of course not, the main function of sunglasses is to block the glare, so, in fact, in the winter after the snow, it is best to bring sunglasses to stop the glare of the glare to protect the eyes.
January 25, 2019