the irradiation damage of UV is cumulative

Most people at one time or another suffers from headaches, and many people in North America with migraines, several times a year in the frequency range from once a month or more. In many cases, migraine or severe headache patients forced isolation, until it disappeared, the destruction of their ability to work, social life, usually in order to give full play to its.
However, most people don't realize is, many migraine and headache you want can be prevented, by often use a set of good sunglasses! Whether it's summer or cold winter, a pair of sunglasses with a high quality is a very useful preventive health care project, as well as fashion accessories. Headache attributed to bright light can trigger migraine, tension, contribute to disease, a good pair of sunglasses can greatly improve the quality of your life, and prevent serious ocular degeneration, eventually lead to blindness.
An effective a pair of sunglasses should stop UVA and UVB rays, but new research shows that, high energy visible (HEV) light may cause eye disease, especially in children. Still have enough data to this question, but now some manufacturers design UV blocking and hybrid vehicle lamp, reduce your light source changes or visual impairment.
This is very important, should pay attention to is UV special glasses sunglasses are not the same. Check, to ensure your depth from a reputable manufacturer, and prove that they at least to block UVA and UVB - if they do not, it is very possible, they are worsening their exposure to deceive your eyes in the harmful rays.
Due to the irradiation damage of UV is cumulative, it is important to always wear a set of high quality sunglasses, start young. If you teach your children to wear sunglasses value when you are young, you may save their eyes from damage - say, everyone knows that a good set of colours look more cool.