Can humans sleep with their eyes open?
The eyes can be open during ordinary sleep, but the sleeping person is unconscious and cannot see anything. The cause is typically that a nerve function in the eye region fails, making the eyelids slide open. The condition can occur temporarily in healthy people, and for unknown reasons, it is most common among small children, who grow out of it. Sleeping with open eyes can also be a permanent condition among adults caused by blood clots in the brain or facial paralysis. The phenomenon does not harm the visual organ, but the eyes can dry out from being open all night.
Adults may temporarily sleep with their eyes open. K C O ST R E TT U H S