Well, there are actually many benefits to wear sunglasses when you go outsides. Of course, they can shield your eyes. As we know that no matter it is sunny or cloudy, people are exposed to ultraviolet (UV) rays from the sun. And these kinds of rays are invisible and also very harm to our health. So you should wear sunglasses to protect eyes from the harmful rays. Many people know that there is need to protect their skin from the sun, but not everybody knows that it is equally critical to protect eyes. But some researches have shown that exposure to bright sunlight may increase the risk of developing conditions, such as cataracts, age-related macular degeneration and growths on the eye, including cancer. So you should wear sunglasses to decrease the risk of getting those kinds of diseases.