Why do some people sleep with their eyes open?

Uncommon: This may occur with muscular disorders of the lid which can prevent full closure. It also may occur with trauma and burns which contact the upper lid and leave portions of the eye open at night. If the opening is too wide, it may damage the cornea and impede vision. Discuss this with your ophthalmologist.

Difficult : Usually they have a problem with their eye lids like a type of scarring , or they are just not completely closed. Others who have a sleep disorder and sleepwalk have their eyes open too but they are not resting

Many causes: Some people naturally sleep with their eyelids open 1-2 millimeters. Sometimes there is an underlying condition that contributes to poor eyelid closure such as graves' disease or bell's palsy. Sleeping with the eyelids open can lead to dryness of the corneas (exposure keratopathy). An eye exam is important to assess the health of the cornea and determine the proper treatment.