In this Photo there is the Retina which is a thin layer of tissue in the back of the eye, its purpose is to receive light and convert it to signals to the brain. The Vitreous Humor, is a clear substance that fills space between the lens, its functions acts like a water ballon to expand the space and inflate the eye ball to keep it filled. The Lens is a small Sphere in between the Vitreous Humor, its function is to to help focus on objects from various distances. The Choroid is the shiny material on the back of the eye its function in animals is to help absorb more light waves. The Sclera is the outer area of the eye that acts as a tough protection from injury.
In this photo you can see the Extrinsic muscle, the muscle group controls the horizontal, vertical and rotating movement of the eyeball. Also you can see the Optic nerve, its a bundle of nerves that transfers visual information from the retina to the brain. The fatty tissue that surrounds the eye is used to protect the eyes layers.
In this photo you can see the lens, and Virtuous Humor, but as well as the black rings around the lens is the Suspensory ligaments which job is to contract to adjust the lens to help take in more or less light.
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