Is it normal to sleep with one eye slightly open?
Hmm.Worth a closer look
It can happen, but regularly sleeping with one eye partly open isn’t something to ignore because the exposed eye can dry out. If it happens often or you wake with irritation, redness, or blurry vision, get it checked.
Some people’s eyelids don’t close all the way during sleep, so one eye may stay slightly open. It’s not unheard of, and an occasional episode may not cause any trouble—but the eye can get dry or irritated when it’s exposed overnight.
If you notice it happening regularly, or wake up with a gritty, red, painful, or blurry eye, check in with an eye-care professional. They can see whether the eye needs protection or whether something is making the eyelid stay open.