Sunglasses provide protection from Ultraviolet rays in sunlight. Ultraviolet (UV) light damages the cornea and the retina of the eye. Good sunglasses can eliminate UV rays completely. For more information see our section below on (UV). Red Frog Sunglasses eliminate 100% of UVA & UVB . Sunglasses provide protection from intense light. When the eye receives too much light, it naturally closes the iris. Once it has closed the iris as far as it can, the next step is squinting. If there is still too much light, as there can be when sunlight is reflected off snow or water, the result is damage to the retina causing macular degeneration and cataracts and ultimately blindness. Good sunglasses can block light entering the eyes by as much as 97% to avoid damage.
