Sunglasses do a lot more than just make you look cool. A good pair of UV protection sunglasses will make your eyes last longer. Too much exposure of the eyes to the sun results in eye cataracts during old age. By age 80 more than half of people in the US have developed cataracts in their eyes. Cataracts are a clouding in the eye's lens that cause the transparent lens layer to slowly become opaque. Do your eyes a favor and stay protected.