PolarAB® lenses will effectively protect your eyes from both UVA & UVB light, the most damaging types of ultraviolet light. UVC light is of no concern, as it is absorbed by the upper atmosphere and does not reach the earth's surface. UVB rays burn the skin and can damage the eyes. Research has suggested that daily exposure to UVB, combined with cold wind or snow, has the potential to cause snow blindness (photokeratitis). Daily exposure to UVB in bright sunlight over a period of years may cause cataracts, a gradual clouding of the eye. UVA rays are primarily absorbed within the lens of the human eye, and there are no documented disorders of the human eye from exposure to UVA. This, however, is a much debated and researched subject says the Sunglass Association of America. SolarShields completely isolate the eyes from UV light. The patented 360° of Advanced UV Protection completely encloses the eyes within a cocoon of comfort and style, protecting from not only direct, but indirect and reflected light from the top, bottom and peripherally.