The ocular system consists of the eye and its central visual system . Light images from the outside pass through the central visual system (cornea, the lens, and fluids) to land upon the retina. The retina then generates the signals passed by the optic nerve to the brain and interpreted as vision. The eye is composed of the cornea (clear outer covering), conjunctiva (white part), iris (colored part), and the eye wall (choroid, retina, and sclera). The ocular system allows the body to see the outside world.
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