how do eyelids help the eyeballs?
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paras1235:
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The upper and lower eyelids help to protect the eye, and keep its surface moist. The upper eyelid is more mobile and is attached to a special muscle, called the levator palpebrae superioris. This muscle allows you to control the upper eyelid. Eyelids help to spread the tear film across the eye by blinking.
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