These wear protective glasses

Sunglasses are people from all walks of life, some are to highlight the wearer's personality of them, a lot of people are some of the most popular accessories used to protect the wearer's eyes. However, sunglasses is mainly used for vision protection, which is why so many people like to wear sunglasses, when summer comes. There is really any manufacturer which or make any designer sunglasses, no great difference in the aspect of function.
Although excessive exposure to the sun really can do great damage to the eye in the sun's ultraviolet rays can damage the eyes, exposed to a certain extent, is beneficial to the eyes. Therefore, does not need to take Sunglasses whenever outdoors. These wear protective glasses need only one place to go, in the light too bright or too strong. For example, in need of some protective glasses, when people driving at night or in the snow ski.
The reason why people should wear eye protection firmly hanging in the sun's ultraviolet. Ultraviolet radiation can be divided into UVA and UVB two types, namely the decline. Each of them will cause great damage to different parts of the eye tissue. In particular, UVB will lead to cataracts and many other serious vision problems.
However, the surrounding environment has become worse than ever, especially ultraviolet than before more damage is caused by ozone layer become more common. This also leads to more and more cataract and many other problems are at much higher risk.
The lens of the eye, it is true, to some extent can also block ultraviolet rays, but the strong light can really cause vision damage greatly. UV rays can also accumulate over time, people might get cataract or because of the blind.