☼Cornea - The clear outer part of the eye's focusing system located at the front of the eye.
☼Iris - The colored part of the eye that regulates the amount of light entering the eye.
☼Pupil - The opening at the center of the iris. The iris adjusts the size of the pupul and controls the amount of light that can enter the eye..
☼Lens - A clear part of the eye behind the iris that helps to focus light, or an image, on the retina.
☼Vitreous humor - A clear gel that fills the inside of the eye.
☼Optic nerve - A bundle of more than one million nerve fibers that carries visual messages from the retina to the brain.
☼Retina - The light-sensitive tissue lining at the back of the eye. The retina converts light into electrical impulses that are sent to the brain through the optical nerve.
☼Sclera - The sclera, also known as the white part of the eye, is the opaque (usually white, though certain animals, such as horses and lizards, can have black sclera), fibrous, protective, outer layer of the eye containing collagen and elastic fiber.[1] In the development of the embryo, the sclera is derived from the neural crest.[2] In children, it is thinner and shows some of the underlying pigment, appearing slightly blue. In the elderly, fatty deposits on the sclera can make it appear slightly yellow.
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