Wearing a good pair of sunglasses is necessary whenever you need to go to certain circumstances with strong light. When you go outside, you know you should wear sunscreen to protect your skin, because the UV rays of sunlight would darken, burn and age the skin. Long term exposure to strong UV rays might even cause skin cancer. Actually just like the skin, UV rays also impacts our eyes. It can cause damages to the surface tissue, the lens and the cornea. According to some reliable sources, wearing sunglasses could effectively slow down the growth of cataract. The person who is always exposed to sunlight without protection is at a much higher risk of developing cataract. If someone had a intraocular surgery, then he is required to wear sunglasses for a long period after this operation to avoid corneal scarring formed because of exposure to sunlight. Anyway, if you can, why don't wear a pair of sunglasses to protect yourself? Plus, grey and brown colored lenses are the best choice for protection.
