Why Do People Wear Sunglasses
It is in the middle of summer now. And it is really hot outside. Further more, the sunshine is strong enough to hurt people鈥檚 eyes. Thus, quite a lot of people are seen wearing glasses here and there in the street. But why do people wear prescription sunglasses? Is it just for the protection of our eyes? The answer is certainly not.
As is known to all, the sunshine contains invisible ultraviolet radiation and infrared radiation. They are both harmful to people’s eyes. They can make the crystalloid turbid. People who live in plateau areas will get cataract more easily than those who live in plain areas. When people get sunshine more and longer, the chances of getting hurt from ultraviolet radiation will increase at the same time. Infrared radiations have similar damage to people as ultraviolet radiation. Besides, if the eyes are basked outside for a long time, the surface of the eyeball will be damaged badly. It is very painful and will make people weep all the time. So when putting on eyeglasses, people will make their eyes protected from these harmful rays. Thus, it will make people feel very comfortable. In a word, sunglasses really bring much convenience to people when they have to be outside.
Although protecting eyes is the main function of sunglasses, they can also make people get comfortable from people’s affections. When the heating surroundings become refrigerant, people tend to be calm down gradually. That is to say, people will not get whiny so easily. It not only decreases the inner harm from strong sunshine but also people鈥檚 tiredness. What an enjoyment if one can own a pair of sunglasses when one walks in the street!
In addition to the function of protecting, it can also make people look sexy and cool. With a pair of sunglasses, people can make their eyes hidden. So others will not be able to see the expressions of the eyes and it will increase one’s sense of mysteries. On the other hand, it can show one鈥檚 characteristics and make people more confident.
It is believed that more and more people will benefit from sunglasses in such hot weather.
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