CHOROID: The vascular layer of the retina that supplies blood to the photoreceptors (the cameras of the eye).

CONES: The photoreceptor cells that detect color.

CORNEA: The clear window at the front of the eye.  Contact lenses sit on the cornea.

DRUSEN: A deposit of protein and other material that collect in the layers of the retina.

FARSIGHTED: When a person sees better at a distance than they do up close.

FOVEA: Part of the macula, responsible for central vision and fine focus.

LACRIMAL GLAND: The gland that makes tears.

LENS: The feature of the eye that focuses light onto the retina.  It can change shape slightly to focus up close.

IRIS: The colored part of the eye.  It is a muscle that changes the size of the pupil.

MACULA: The area of the retina surrounding the fovea.  This is the region that is affected by macular degeneration.

OPTIC NERVE: This is the "trunk cable" that is formed by all the retinal nerve fibers.  The optic nerve carries information to the
                            brain.

PUPIL: hole in the middle of the iris

RETINA: The tissue of the eye made up of photoreceptors and support cells and blood supply.  The retina is what converts
              light into nerve impulses which the brain then interprets into what you see.

RODS: photoreceptors that do not detect color.  

SCLERA: The tough outer coat of the eye, it is the white part of the eye.

SUBRETINAL HEMORRHAGE: A collection of blood underneath the retina.

VITREOUS HUMOUR: The clear, jelly-like substance inside the eye that helps hold the shape of the eye.
Eye Health
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