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Cornea
The clear outer part of the eye's focusing system located at the front of
the eye.
Fovea
The center of the macula; gives the sharpest vision.
Iris
The colored part of the eye that regulates the amount of light entering
the eye.
Lens
A clear part of the eye behind the iris that helps to focus light, or an
image, on the retina.
Macula
The small sensitive area of the retina that gives central vision. It is
located in the center of the retina and contains the fovea.
Optic Nerve
A bundle of more than one million nerve fibers that carries visual
messages from the retina to the brain.
Pupil
The opening at the center of the iris. The iris adjusts the size of the
pupil and controls the amount of light that can enter the eye.
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 optic nerve.
Vitreous Gel
A clear gel that fills the inside of the eye.
The information on this page was provided by the National Eye Institute, National
Institutes of Health (NEI/NIH).
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Understanding my diagnosis helped me take control of my vision loss.
