from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The transparent convex anterior portion of the outer fibrous coat of the eyeball that covers the iris and the pupil and is continuous with the sclera.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The transparent layer making up the outermost front part of the eye, covering the iris, pupil, and anterior chamber.
from the GNU version of the Collaborative International Dictionary of English
- n. The transparent part of the coat of the eyeball which covers the iris and pupil and admits light to the interior. See eye.
from The Century Dictionary and Cyclopedia
- n. The firm, transparent anterior portion of the eyeball.
- n. In entomology, the outer surface of an insect's compound eye.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the transparent dome-shaped anterior portion of the outer covering of the eye; it covers the iris and pupil and is continuous with the sclera
The cornea is a clear, jelly-like membrane covering the eye.
Well, my right cornea is still mostly opaque, but I did write 1359 words today despite being half-blind.
Macrida Patterson, a 52-year-old Los Angeles traffic officer, told NBC's "Today" show that she suffered cuts to her cornea from the small piece of metal that had been used to secure a rhinestone heart onto the blue thong.
An artificial cornea is in sight, thanks to biomimetic hydrogels
The birds seem to use these as sunshades, deliberately positioning the head so that the cornea is shaded from bright light when appropriate (Martin & Coetzee 2004).
The rabbit cornea is able to regenerate on the underside, whereas the human cornea can only regenerate on the surface.
The team’s artificial cornea is made from tiny collagen fibres extracted from these sea cucumbers.
: A laser is used to cut a flap in the cornea, which is then repositioned to improve sight.
This means that over the long term the cornea could lose its transparency.
Pus behind the cornea is a sign of severe inflammation.