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Eye Structures

TermDefinition
Sclera Outer protective layer of the eye; the white of the eye
Cornea Transparent anterior part of the sclera; allows for light rays to enter the eye
Choroid Middle layer of the eye; interlaced w/ many blood vessels t hat supply nutrients
Iris Pigmented muscular structure that regulates amount of light entering the eye by controlling size of pupil
Pupil Opening in the center of the iris
Lens Lies directly behind the pupil; its function is to focus and bend light
Retina Innermost layer of the eye; contains vision receptors
Aqueous humor Watery liquid found in anterior cavity of the eye; provides nourishment to nearby structures; maintains shape in the anterior part of the eye
Vitreous humor Jellylike substance found behind the lens in the posterior cavity of the eye that maintains its shape
Meibomian glands Oil glands found in the upper and lower edges of the eyelids that help lubricate the eye
Lacrimal glands and ducts Produce and drain tears
Optic nerve Carries visual impulses from the retina to the brain
Conjunctiva Mucous membrane lining the eyelids and covering the anterior portion of the sclera
Created by: StudyNinja274