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parts of the eye

parts of the eye
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Iris
Flat, colored, ring shaped membrane behind cornea
Cornea
The clear tissue that covers the front of the eye
Pupil
Dark circular opening at center of iris, varying in size to regulate how much light reaches retnia
Retina
the light-sensitive membrane covering the back wall of the eyeball
Choroid
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
Sclera
'white outermost layer of the eye provides strength, shape, and structure
Lens
the flexible piece of tissue that helps focus light toward the back of the eye, behind iris