Can you sleep with your eyes open? Why do you need to close your eyes when sleeping?

When people sleep, the higher nerve center of the brain is inhibited, so the nerves that control the eyelid muscles are bound to be inhibited, and the eyelid muscles are uncontrolled and in a natural closed state. When you feel that your eyelids are getting heavier and heavier, it is your brain nerve center that gradually goes into a dormant state and slowly loses control of your eyelid muscles.

So as to protect the cornea and conjunctiva, but? Sleeping with your eyes open, exposing your eyes for a long time, your eyes will be dry, and your cornea and conjunctiva will suffer from eye diseases without the protection of tear film.

Why can you open your eyes? Is it natural to open your eyes? Not exactly. People need to keep their eyes open, just like people need muscle participation to do any action. Opening your eyes is no exception. Don't underestimate the eyes, in fact, there are many developed muscle tissues around the eyes.

There are many factors that lead to "sleeping with your eyes open". The most common diseases are facial paralysis, cicatricial ectropion, thyroid-associated ophthalmopathy and congenital glaucoma. Among them, thyroid-associated ophthalmopathy is a common cause of eyelid insufficiency.

When sleeping, the eyelids are relaxed, and it may be a normal physiological phenomenon to sleep with your eyes open. The opening and closing of eyes is accomplished by the contraction and relaxation of extraocular muscles and expression muscles, especially levator palpebrae and orbicularis oculi muscles. When sleeping, the nerve has weak control over the muscles, and the tension of the orbicularis oculi muscle is low or the levator palpebralis muscle is slack, which is a normal phenomenon.

There are two main muscles related to eye opening and closing, one is called levator palpebrae superioris, which is responsible for pulling up the upper eyelid and completing the action of opening eyes.

People who can sleep with their eyes open are actually sick. Either the eye nerve is slack, or he suffers from facial neuritis, and it is even possible that the eye muscles have congenital malformation. And even if you can sleep with your eyes open, you can't see anything, because after you fall asleep, the central nervous system is already in a state of inhibition.