The sun supports all life on our planet, but its life giving rays also possess certain dangers. The sun's primary hazard is in the form of ultraviolet (UV) radiation. The longer the eyes are exposed to UV radiation, the greater the risk of damage to the eyes. Damage can range from temporary discomfort to long term damage such as cataracts. Dynamix lenses block out 100% UVA, UVB, UVC and harmful blue light up to 400nm, providing you complete protection from harmful rays.