It’s never a good idea to stare directly at the sun -- you can seriously damage your eyes if you do. But one common injury, snow blindness, happens when the sun’s ultraviolet (UV) rays bounce off highly reflective surfaces like snow, ice, water, and sand. It’s like having a sunburned eye. You don’t actually go blind, but it can keep you from seeing for a day or two. Other symptoms include pain, redness, tearing, a gritty feeling in your eye, and sensitivity to light.