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8 Cards in this Set

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  • Back
Sclera
tough white outer covering; maintains shape
Cornea
transparent covering at the front of the eye; light first enters the cornea and, because of its curve, it begins the process of refracting light rays to form images
Anterior Chamber
contains the aqueous humor; nourishes the cornea and lens; directly behind the cornea
Pupil
hole in the middle of the eye where light enters
Iris
a circular muscle that controls how much light enters the eye; means "rainbow" in Greek
Lens
clear structure behind the pupil and iris that focuses light on the retina; muscles change the shape of the lens to adjust focus
Vitreous Chamber
the large inner cavity of the eyeball that contains the vitreous humor (jelly-like substance)
Retina
back of the eye where the image is projected; contains photoreceptors that are sensitive to light