Is it normal to sleep with your eyes half open?
Mostly.Normal for most people
Yes, some people sleep with their eyes partly open, and it’s often harmless. If you wake up with dry, irritated, or red eyes, it’s worth asking an eye-care professional about it.
It can happen because your eyelids don’t fully close while you sleep. You may not even know you’re doing it unless someone notices or you catch a glimpse in a photo—sleep is already weird enough without an audience.
For many people it causes no trouble. But partly open eyes can dry out overnight, so if you regularly wake up with irritation, redness, pain, or blurry vision, check in with an eye-care professional.