A clear flexible structure that makes an image on the eyes retina. This is flexible so that it can change shape, focusing on objects that are close up...

A thick, clear jelly that helps give the eyeball its shape

The place where the optic nerve leaves the retina. This is where there are no light sensitive cells.

The bundle of nerve fibers that carry information from the retina to the brain.

It is a reflex. The pupil constricts when the circular muscle, controlled by the PNS contracts.

they can only look up down left right, only four muscles for that.

A clear fluid that helps the cornea keep its shape. It is made out of protein and water.

A thick thought white outer covering of the eyeball

This layer of light sensitive cells at the back of the eye. This detects images focused by the cornea and the lens. It is connected to the brain by th...

Located in the dark circle in the center of your iris. It is a hole that lets light into your eye. ( cows is oval while humans in round )

The cow eye has a tapetum while the humans do not. Humans are not nocturnal, therefore they do not need to see in the dark. Cows have oval shaped pupi...

Reflected light first travels through your cornea. The light then shines through your pupil. Then it shines through your lens. It bends the light then...

A tough, clear covering over the iris and the pupil that helps protect the eye. Light bends as it passes through this. This is the first step in makin...