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Anatomy of the Eye

  • Anterior chamber. The front section of the eye's interior where aqueous humor flows in and out, providing nourishment to the eye.

  • Anterior chamber. The front section of the eye's interior where aqueous humor flows in and out, providing nourishment to the eye.

  • Aqueous humor. The clear watery fluid in the front part of the eye known as the anterior chamber.

  • Blood vessels. Tubes (arteries and veins) that carry blood to and from the eye.

  • Caruncle. A small, red structure in the corner of the eye closest to the nose that contains modified sebaceous and sweat glands.

  • Choroid. The thin layer of blood vessels that lies between the retina and the sclera and supplies blood to the outer portion of the retina.

  • Ciliary body. The part of the eye that makes aqueous humor.

  • Cornea. The clear, dome-shaped surface that covers and protects the front of the eye.

  • Iris. The colored part of the eye that helps control the amount of light entering the eye.

  • Lens (crystalline lens). The transparent structure inside the eye that focuses light rays onto the retina, much like the lens in a camera.

  • Lower eyelid. Skin that covers the lower part of the eye, including the cornea, when closed.

  • Macula. The central portion of the retina that allows us to see fine details.

  • Optic nerve. A bundle of nerve fibers that connect the retina with the brain. The optic nerve carries signals of light, dark, and colors to a part of the brain called the visual cortex, which assembles the signals into images and results in vision.

  • Posterior chamber. The very narrow part of the eye behind the iris and in front of the lens

  • Pupil. The opening in the center of the iris through which light passes to the back of the eye.

  • Retina. The light-sensitive nerve layer that lines the inside of the back of the eye. The retina senses light and creates impulses that are sent through the optic nerve to the brain.

  • Sclera. The white visible portion of the eye. The muscles that move the eye are attached to the sclera.

  • Suspensory ligament of lens. A series of fibers that connects the ciliary body with the lens, holding it in place.

  • Upper eyelid. Skin that covers the upper part of the eye, including the cornea, when closed.

  • Vitreous body. A clear, jelly-like substance that fills the middle of the eye between the lens and the retina.

Side view cross section of eye anatomy.Front view of eye.

Online Medical Reviewer: Daphne Pierce-Smith RN MSN
Online Medical Reviewer: Marianne Fraser MSN RN
Date Last Reviewed: 4/1/2025
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