Sheep Eye Dissection Analysis

In this lab, we dissected a sheep's eye. Through this lab, we physically examined the structures where light travels. In the eye, the light passes through the cornea first. The cornea is the outermost layer of the eye that protects the eye itself. It appears clear and almost looks like a contact. After that, it travels through the aqueous humor. The aqueous humor is a clear-like liquid substance that nourishes the eye. It then goes through the pupil, which is basically a hole in the eye. The size of the pupil is controlled by the iris, which also displays the color pigment of the eye. After passing through the pupil, it hits the lens. The lens is a round-clear ball that is about the size a marble. The lens allows the eye to see at different distances by changing shape. After hitting the lens, the light passes through the vitreous humor. The vitreous humor is a thick fluid like substance with the consistency of snot. It is very clear to allow light to clearly pass through the eye. It is important for the overall health of the eye and helps it maintain its shape. After this, the light hits the retina, which is a thin sheet of tissue that helps convert the light into neurons for the optic nerve, which is where the light travels next. When it gets to the optic nerve, it takes the signal from the retina and sends it off to the brain. In it's appearance, the optic nerve is a solid-looking, cylinder structure on the posterior of the eye.