Origin
The frontal, maxillary and lacrimal bones.
Insertion
The orbicularis oculi blend with the neighboring muscles and fibers around the orbit.
Blood supply
Ophthalmic artery, facial artery, superficial temporal artery.
Nerve supply
Facial nerve.
Action
The muscle closes the eyelid. It compresses the tear gland and keeps the eye moist.
Disease/Injury
Blepharospasm is a condition in which the eyelids twitch or blink involuntarily. Bell’s palsy results in the inability to close the eye.
Interesting facts
The muscle helps you to wink and express concern. When you look towards bright sunlight, your orbicularis oculi closes the eye tightly.
