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Eye Vocabulary

TermDefinition
Cornea Transparent covering that allows light to enter the eye; on a preserved specimen, the cornea is cloudy.
Optic Nerve Bundle of nerve cells that send signals from the eye to the brain.
Aqueous Humor Clear fluid filling the area between the lens and the cornea, composed mostly of water.
Vitreous Humor Viscous fluid that fills the vitreous body; helps maintain the shape of the eyeball.
Retina Light-sensitive portion of the eye composed of receptor cells called cones and rods.
Tapetum Lucidum Iridescent portion of the choroid tissue; helps in night vision by reflecting available light back onto the retina.
Lens Biconvex transparent structure that focuses the light coming in through the cornea and pupil.
Iris Diaphragm that regulates the size of the pupil.
Pupil Opening through which light enters the eye.
Sclera Outer covering of the eyeball; a tough, opaque sheet of connective tissue that protects inner structures of the eyeball and helps maintain rigidity.
Choroid Thin, dark sheet of tissue between the retina and the sclera.
Created by: ozy
 

 



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