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Lens:
The second transparent structure of the eye that changes the direction of rays of light to focus on the retina.
Vitreous:
The clear, jelly-like substance that fills the back cavity of your eyeball. The vitreous fills up two-thirds of your eyeball.
Macula:
The small, specialized central area of the retina, the macula is responsible for acute(sharpest) central vision.
Retina:
The lining of the rear two-thirds of the eye. It contains nerves the retina converts images from the eye's optical system into electrical impulses sent along the optic nerve to the brain.
Optic Nerve:
A bundle of nerve fibers that carry impulses for sight from the retina to the brain.
Iris:
The colored portion of your eye (the par that surrounds the pupil). This expands and contracts (allowing the pupil to change size), allowing light to enter through the pupil and into the back of your eye.
Cornea:
The transparent front tissue of the eye that covers the iris and pupil, and allows for light to pass into your eye.
Anterior Chamber:
A watery substance that fills the front third of the eye. It fills the area between the lens and the cornea. It gives nourishment to the lens and the cornea.
Sclera:
The white of the eye; a transparent intraocular tissue that helps bring rays of light to focus on the retina.
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