LOL, as usual, seldom guys sleep with eyes open. If you just sleep with your eyes open once or just for a while, then you can just do it and it will not do harm for you and your eyes. However, if you do that many times, then you will get some harm for you, because as we all know that when we are sleeping, our eyes also need rest. When your eyes are open when you are sleeping, your eyes will not get dry out, which is bad fr you and your eyes. I think is is why we blink to keep our eyes filled with moisture. What's worse, you are more likely to get some eye disease if you sleep with eye open. For example, your eyes will also become glassy and irritated. Meanwhile, sleeping with your eyes open will cause the lack of muscles around your eye area. If you sleep with your eyes open, you should ask help for your eye doctor, also the surgery can also improve the problem.