4. What is the function of eyelids?
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Explanation:
The main role of the eyelids is to protect the eye. It's vital that the surface of the eye (the cornea) remains constantly moist, so the eyelid is responsible for spreading the tear film evenly across the surface. When we sleep, the eyelids don't simply block out light, they keep the cornea from drying out
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Explanation:
The main role of the eyelids is to protect the eye. It’s vital that the surface of the eye (the cornea) remains constantly moist, so the eyelid is responsible for spreading the tear film evenly across the surface. When we sleep, the eyelids don’t simply block out light, they keep the cornea from drying out. Ancillary to the eyelids are the eyebrows, which protect the eyes from dirt, debris and sweat, and the blink reflex, which protects the eyes from foreign bodies.
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