Welcome to Marin Eye Care
Marin Eye Care: Anatomy of the Eye
EYE ANATOMY
Cornea - the clear, front part of the eye. The cornea is the first part of the eye that bends (or refracts) the light and provides most of the focusing power.Endothelium - the inner layer of cells on the inside surface of the cornea.
Epithelium - the outermost layer of cells of the cornea and the eye's first defense against infection.
Iris - the colored ring of tissue suspended behind the cornea and immediately in front of the lens.
Lens - a part of the eye that provides some focusing power. The lens is able to change shape allowing the eye to focus at different distances.
Pupil - a hole in the center of the iris that changes size in response to changes in lighting. It gets larger in dim lighting conditions and gets smaller in brighter lighting conditions.
Retina - a layer of fine sensory tissue that lines the inside wall of the eye. The retina acts like the film in a camera to capture images, transforms the images into electrical signals, and sends the signals to the brain.
Sclera - the tough, white, outer layer (coat) of the eyeball that, along with the cornea, protects the eyeball.
Stroma - the middle, thickest layer of tissue in the cornea.
Vitreous Humor - the transparent, colorless mass of gel that lies behind the lens and in front of the retina and fills the center of the eyeball.
Another view of the eye, a vertical sagittal section of the adult human eye.
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