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| conjunctiva |
the mucous membrane lining the inner surface of the eyelid and the surface of the eyeball. |
| contact lens |
a thin, plastic lens that is worn on the eyeball to correct vision or change the color of the eyes. |
| exophthalmos |
abnormal protrusion of the eyeball caused by certain medical conditions such as hyperthyroidism. |
| eyeball |
the part of the eye that is shaped like a ball. The eyeball sits in the eye socket. |
| eyelid |
a fold of skin that can be opened or shut over the eyeball. |
| glaucoma |
a progressively disabling disease of the eye marked by increased pressure in and hardening of the eyeball. |
| intraocular |
occurring within or surgically implanted into the eyeball. |
| nystagmus |
an involuntary twitching or vibrating movement of the eyeball, usu. from side to side. |
| oculomotor |
designating the nerves that supply the muscles that move each eyeball. |
| ophthalmoscope |
an instrument for examining the retina and the interior of the eyeball. |
| orb |
an eye or eyeball. [1/3 definitions] |
| retina |
the part of the eye at the back of the inside of the eyeball. The retina has cells that sense light and color. Images are formed on the retina and sent to the brain. |
| sclera |
the tough fibrous white or blue-white tissue that covers all of the eyeball except the part covered by the cornea. |
| tonometer |
any of various medical instruments that measure pressure, as of the blood, or tension, as in the eyeball. [1/3 definitions] |
| vitreous humor |
the transparent, colorless jelly that fills the eyeball between the lens and the retina. |
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