Yes, some people can and do sleep with their eyes open. It's a condition called nocturnal lagophthalmos.
What is Nocturnal Lagophthalmos?
Nocturnal lagophthalmos is the inability to close the eyelids completely during sleep. While many people with this condition can close their eyes mostly shut, a small gap remains. It's estimated that around 20% of people experience this, including infants.
Causes of Sleeping with Eyes Open
Several factors can contribute to nocturnal lagophthalmos:
- Facial Nerve Paralysis (Bell's Palsy): Damage to the facial nerve can weaken the muscles that control eyelid closure.
- Ectropion: This is a condition where the eyelid turns outward, making complete closure difficult.
- Proptosis: Protrusion of the eyeball can prevent the eyelids from fully closing.
- Trauma or Surgery: Injuries or surgical procedures around the eyes can affect eyelid function.
- Thyroid Eye Disease: This autoimmune condition can cause the eye muscles to swell, leading to proptosis and incomplete eyelid closure.
- Certain Genetic Conditions Sometimes, it can just be a family trait.
Potential Problems and Side Effects
Sleeping with your eyes open can lead to:
- Dry Eyes: The most common problem. Exposed eyes dry out, causing irritation, burning, and a gritty sensation.
- Corneal Damage: Prolonged dryness can damage the cornea, the clear front surface of the eye.
- Blurred Vision: Dryness and corneal damage can affect vision.
- Infections: A dry eye is more susceptible to infection.
Treatment Options
Treatment aims to keep the eyes lubricated and protected during sleep. Options include:
- Artificial Tears: Over-the-counter eye drops can provide temporary relief from dryness.
- Eye Ointments: Thicker than eye drops, ointments provide longer-lasting lubrication.
- Humidifiers: Increasing humidity in the bedroom can help prevent dryness.
- Moisture Chambers: These devices fit over the eyes and create a moist environment.
- Eyelid Weights: These are taped to the eyelids to help them close.
- Surgery: In severe cases, surgery may be needed to repair eyelid abnormalities.
If you suspect you're sleeping with your eyes open, consult an eye doctor (ophthalmologist) for diagnosis and treatment.
