The muscle in the eyelid called the ________ is responsible for blinking and squinting.

Eyelid Muscle

Refers to any of the muscles responsible for eyelid movement, including the levator palpebrae superioris, which raises the eyelid, and the orbicularis oculi, which closes the eyelid.

Blinking

A rapid opening and closing of the eyelids which helps to spread tears across and remove irritants from the surface of the cornea and conjunctiva.

Squinting

The partial closing of one's eyes to improve focus or reduce light exposure, or a misalignment of the eyes where they do not aim simultaneously at the same point.