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parts of the eye


Flat, colored, ring shaped membrane behind cornea


The clear tissue that covers the front of the eye


Dark circular opening at center of iris, varying in size to regulate how much light reaches retnia


the light-sensitive membrane covering the back wall of the eyeball


vascular layer beneath the sclera that provides nourishment to the outer portion of the retina

Opitic nerve

the bundle of cells that carry neural message from eye to brain


'white outermost layer of the eye provides strength, shape, and structure


the flexible piece of tissue that helps focus light toward the back of the eye, behind iris

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