We are outside a lot! I'm always worried about eyesight - especially since mine was so poor. In AZ, we have a lot of sun issues. In order to start the sunglass habit early, I purchased sunglasses for both of the boys. Aiden has so far refused to wear his, but check out Isaiah. He loves them.
A little health note - the $9.99 sunglasses at WalMart are not good for your eyes. You really need to invest in a good pair of sunglasses from a reputable company. Ashley wears SpyWear. I'm not sure that they are top of the line - but they are protective and provide clear vision. I wear Revo's.