Sheep Eye

iris

1)

retina

1)

1) suspensory ligamanets of the ciliary body 2) lens

1) and 2)

ciliary body, lens

1) and 2)

cornea, sclera

1) and 2)

vitreous humor, retina

1) and 2)

conjunctiva (eye-lid), cornea, sclera, fatty tissue

1), 2), 3), and 4)

cornea, extrinsic muscle, optic nerve, sclera

1), 2), 3), and 4)

optic nerve, fatty tissue, extrinsic muscle

1), 2), and 3)

optic nerve, sclera, extrinsic muscles

1), 2), and 3)

sclera, choroid, retina

1), 2), and 3)

pupil

2)

Tapetum Lucidum

Iridescent layer, blue green iridescent sheen on the choroid which reflects light and causes the eyes to shine at night when illuminated.

Sclera

Tough, white outer coat of the eyeball white part of the eye, thick, tough, protects the eye. The transparent potion of it is known as the cornea

Ciliary Body

black with "spokes" anchors suspensory ligaments that flatten the lens for focusing your vision structure in the eye that releases a clear liquid in the eye. This liquid is called the aqueous humor. This also contains the ciliary muscle which changes the shape of the lens when your eyes focus on something.

lens

by changing shape, functions to change the focal distance of the eye so that it can focus on objects at various distances, thus allowing a sharp real image of the object of interest to be formed on the retina.

Cornea

clear "disk" covering the iris and pupil protects the front of the eye controls and focuses the entry of light into the eye.

canal of schlemm

drains fluid from the eye. circular lymphatic-like vessel in the eye that collects aqueous humor from the anterior chamber and delivers it into the episcleral blood vessels via aqueous veins.

Aqueous humor

gelatinous fluid that inflates the globe of the eye. It is a thin, watery fluid that fills the space between the cornea and the iris (anterior chamber) improper dranage can cause an increase in intraocular pressure (pressure inside the eye). This increase can result in loss of vision or contribute to the development of glaucoma. supplies nutrients and nourishment to parts of the eye that lack blood supply. It also removes waste.

Vitreous Humor

the clear colorless transparent jelly that fills the posterior chamber of the eyeball gel like substance in the posterior chamber, gives structure to the eye and maintains its shape. can cause the retina to separate from the back wall of the eye, often resulting in floaters — spots that appear to float in the field of vision.

Iris

the colored part of the eye. a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina.

Optic Nerve

the cranial nerve that serves the retina, appears as a white line or stem off center in the back of the eye. transfer visual information from the retina to the vision centers of the brain via electrical impulses. made of ganglionic cells or nerve cells. it consists of over one million nerve fibers. Glaucoma is one of the most common illnesses affecting the optic nerve.

ora serreta

the junction between the retina and the ciliary body. It is the area where the retina transitions from a non-photosensitive area to a multi-layered photosensitive region.

Pupil

the opening through which light enters the eye. sphinctor muscles determine how large your pupil is. regulate the amount of light that enters the eye. smaller, less light in larger, more light in

Optic Disk

the point where the optic nerve enters the retina. Blind spot. represents the beginning of the optic nerve and is the point where the axons of retinal ganglion cells come together. also the entry point for the major blood vessels that supply the retina.

Choroid

thin black/brown film covering the eye. absorbs light thin layer of tissue that is part of the middle layer of the wall of the eye, between the sclera (white outer layer of the eye) and the retina (the inner layer of nerve tissue at the back of the eye). The choroid is filled with blood vessels that bring oxygen and nutrients to the eye.

Retina

thin, translucent film covering the eye, beneath the choroid. thin layer of tissue that lines the back of the eye on the inside. It is located near the optic nerve. receives light that the lens has focused, convert the light into neural signals, and send these signals on to the brain for visual recognition. damage to it can cause permanent blindness. Conditions such as ______ detachment, where the ______ is abnormally detached from its usual position, can prevent the ______ from receiving or processing light. This prevents the brain from receiving this information, thus leading to blindness.