Weakness in facial nerves can be attributed to several factors. Issues with facial nerves and muscles surrounding the eyelid can cause the lid to remain open during sleep. The most common reasons for nocturnal lagophthalmos include: There are a number of reasons people might sleep with their eyes open. Why do Certain People Sleep With Their Eyes Open? If your eyelids don’t close, your eyes become more susceptible to dryness, infections, and debris that can scratch and damage the cornea. Closed eyelids block light, which stimulates the brain to wakefulness.Ĭlosing our eyes also protects and lubricates the eyes while we sleep. There are several reasons why it’s important to close our eyes while we sleep. Corneal damage, such as corneal abrasion, sores and ulcers.These contaminants can potentially lead to: Nocturnal lagophthalmos also reduces the eye’s ability to discharge contaminants such as dust and debris that fall into the eye during the night. Eyes that feel scratchy, irritated and dryįor those with nocturnal lagophthalmos, the eye loses the protection of a closed lid and becomes dehydrated, causing the tear layer to evaporate and the eyes to become dry.However, some important indicators may point to the condition, including: It is difficult to evaluate whether your eyes are closed when you're actually asleep. People who have nocturnal lagophthalmos may not even know they have it. What Happens When You Sleep With Your Eyes Open? If upon waking you experience irritated, dry, tired, red, or painful eyes, or if you suspect you might be sleeping with your eyes open, speak with Dr. Nocturnal lagophthalmos generally indicates an underlying medical condition, such as a thyroid problem or an autoimmune disorder. People may not get as much sleep, or sleep as soundly as they’d like, due to the pain and discomfort caused by the eyes drying out during the night. This condition is problematic because it can interfere with sleep and impact eye health. In fact, the National Sleep Foundation estimates that about 1 in 5 people sleep with their eyes open. But sleeping with eyes open is a common eye and sleep disorder known as nocturnal lagophthalmos. Ever heard the saying “to sleep with one eye open”? It’s generally used as a metaphor when advising one to stay vigilant.
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