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17 Cards in this Set
- Front
- Back
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Accommodation |
Normal adjustment of the eye to focus on objects from far to near |
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Aqueous humor |
Fluid produced by the ciliary body & found in the anterior chamber |
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Cone |
Photo receptor cell in the retina that transforms light energy into a nerve impulse |
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Conjunctiva |
Delicate membrane lining the under surface of the eye lids & covering the anterior eyeball |
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Cornea |
Fibrous transparent layer of clear tissue that extends over the anterior portion of eyeball |
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Iris |
Pigmented colored layer that opens and closes to allow more or less light into eye |
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Lens |
Transparent, biconvex body behind the pupil of the eye |
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Macula |
Yellowish region on the retina lateral to & slightly below the optic disc |
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Optic chiasm |
Point at which optic nerve fibers cross in the brain |
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Optic disc |
Region at the back of the eye where the optic nerve meets the retina |
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Optic nerve |
Cranial nerve carring impulses from retina to the brain |
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Pupil |
Central opening of the eye, surrounded by the iris, through which light rays pass |
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Refraction |
Bending of light rays by the cornea, lens, & fluid of the eye to bring the rays into focus on the retina..refract means break |
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Retina |
Light sensitivity nerve cell layer of the eye containing Photo receptor cells (rods & cones) |
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Rods |
Photo receptor cell of the retina essential for vision in dim light & for peripheral vision |
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Sclera |
Tough, white outer coat of eyeball |
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Vitreous humor |
Soft jelly like material behind the lens in the vitreous chamber; helps maintain shape of eyeball |
