- CORNEA:
- Transparent front segment of the eye that covers iris, pupil, and anterior chamber, and provides most of an eye's optical power.
- PUPIL:
- Variable-sized, circular opening in center of iris; it appears as a black circle and it regulates the amount of light that enters the eye.
- IRIS:
- Pigmented tissue lying behind cornea that (1) gives color to the eye, and (2) controls amount of light entering the eye by varying size of black pupillary opening; separates the anterior chamber from the posterior chamber.
- LENS:
- Natural lens of eye; transparent intraocular tissue that helps bring rays of light to focus on the retina.
- RETINA:
- Part of the eye that converts images into electrical impulses sent along the optic nerve for transmission back to the brain. Consists ofmany named layers that include rods and cones.
- MACULA:
- Small, specialized central area of the retina responsible for acute central vision.
- VITREOUS:
- Transparent, colorless, gelatinous mass; fills rear two-thirds of the interior of the eyeball, between the lens and the retina.
- OPTIC NERVE:
- Largest sensory nerve of the eye; carries impulses for sight from retina to brain.
- SCLERA:
- The white of the eye; a protective fibrous outer layer covers all of the eyeball except for the part covered by the cornea.
- CILIARY BODY:
- A muscular ring under the surface of the eyeball; helps the eye focus by changing the len’s shape and also produces aqueous humor.
- CHOROID:
- The vascular layer between the sclera and the retina; the blood vessels in the choroid help provide oxygen and nutrients to the eye.
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How to Deal with Your Scary Red Eye
At some point, you might be the victim of one of these scenarios: You rub your eye really hard, or you walk into something, or you just wake up with a red, painful, swollen eye. However it happened, your eye is red, you’re possibly in pain, and...