fucntions of eye parts

cornea

allows light to enter

aqueous humor

fluid in eye, helps maintain the shape of the eye

Pupil

opening in the center of the iris

lens

transparent structure behind the pupil that changes shape to help focus images on the retina

Iris

controls the size of the pupil opening, regulates light entering the eye

retina

light sensitive inner surface of the eye contains the receptor rods and cones plus layers of neurons that being the processing of visual information

Choroid

provides blood supply, prevents light sensitivity

Sclera

outer part of eye, provides protection and provides shape

Vitreous humor

clear soft-like jelly material, helps maintain the shape of the eyeball

Fovea centralis

area consisting of a small depression in the retina containing cones and where vision is most acute

Blind spot (optic disk)

point where the optic nerve leaves the eye and no receptor cells are located there

optic nerve

the nerve that carries neural impulses from the eye to the brain