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  • Diagram of the Eye

    Study the diagram below or click here for an interactive study guide and game!


    • Cornea: curved to bend light into your eye, its tough and clear like a windshield to protect your eye from dust.

    • Pupil: a hole in the middle of the iris that changes size to let in more or less light.

    • Iris: the colored part of the eye with two muscles to open and close the pupil.

    • Retina: the lining inside the back of your eye has many layers including light sensitive cells that change light into messages for your brain.

    • Optic Nerve: carries the messages from the retina to the brain.

    • Lens: clear and flexible, the lens changes shape to focus light on the retina.