COMPLETE SOLUTIONS VERIFIED
Pupil
Opening through which light enters the eye
Iris
Colored portion of the eye around the pupil that controls size of pupil opening
Sclera
White part of the eye
Conjunctiva
Delicate membrane lining the eyelids and covering the eyeball
Cornea
Clear tissue that covers the front of the eye
Extraocular Muscles
Control eye movement
Optic Disk
Hole in the retina where the optic nerve fibers exit the eye, known as the blind spot
Macula
Round darker area of the eye that mediates vision only from the central visual field
Fovea
Central focal point in the retina, around which the eye's cones cluster
Nasal Retina
, Part of retina for each eye that is located close to the nose
Temporal Retina
Part of the retina for each eye that is located close to the ear
Zonule Fibers
Fibers that connect the lens to the choroid and pull on the lens to change its shape
Lens
Transparent structure behind the pupil that changes shape to help focus images on the
retina
Aqueous Humor
Clear fluid filling the space in the front of the eyeball between the lens and the cornea
Ciliary Muscle
Smooth muscle portion of the ciliary body, which contracts to assist in near vision
Vitreous Humor
Jellylike substance found behind the lens in the posterior cavity of the eye that
maintains its shape
Optic Nerve
Nerve that carries neural impulses from the eye to the brain
Normal Vision
Occurs when light is focused directly on the retina, rather than in front or behind it
Nearsightedness
Visual image is focused in front of the retina
Farsightedness
Visual image is focused behind the retina