UV Eye Safety

We protect our skin with sunscreen, but what about our eyes? There are 3 types of UV radiation UVA, UVB and UVC (UVC poses no threats since it is absorbed by ozone layer). UV rays can damage the eye’s surface tissues as well as the cornea and lens. There can be short term and long term effects of UV radiation. It is not yet known how much exposure will cause damage but you should wear quality sunglasses that offer good protection and should:
1) block out 99-100% of both UV-A and UV-B radiation
2) screen out 75-90 percent of visible light
3) be perfectly matched in color and free of distortion and imperfection
4) have lenses that are gray for proper color perception