It will not lead to blindness but will do harm to your eyes. Actually, the hand sanitizer is a kind of an alcohol based gel that kills viruses and bacteria when applied to the hands. Most hand sanitizer products contain a least 60 percent alcohol, usually ethanol or isopropanol, which is what makes then so effective against viruses and bacteria. However, it the hand sanitizer accidently get into your eyes, it burns and irritates. If you get hand sanitizer in your eyes, your immediate goal is to dilute, then remove the alcohol. The antidote is copious amounts of lukewarm water: pour as much as possible across the surface of your eye for 10 to 15 minutes. Make sure the water's not too hot or too cold; it should feel comfortable on your eyes. The water needs to thoroughly rinse the surface of your eye. It also needs to remove traces of alcohol from the mucous membranes inside your eyelids, so blink rapidly while pouring the water across your eye. If the sanitizer is in only one eye, be careful not to contaminate the other eye. Keep the uninjured eye tightly closed, and tilt your head so the injured eye is downward.If your eyes are still red, irritated or burning after treatment, consult your physician.