CORNEA • DICTIONARY ONE.COM • Definition of Cornea

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/kˈɔrniə/ Listen

Cornea

noun

(pl. corneas)

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.

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Etymology of 'Cornea'

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"Cornea" Quotes from Famous Books

... sclerotic, and thus forms a segment of a much smaller sphere than is inclosed by the sclerotic. Its walls, too, have in health a perfect translucency, from which it has derived the name of transparent cornea. This transparent coat is composed, in the main, of fibers with lymph interspaces, and it is to the condition of these and their condensation and compression that the translucency is largely due. This may be shown by compressing with the fingers the eye of an ox which has just been killed, when ...

— Special Report on Diseases of the Horse • United States Department of Agriculture

... a bright spot seen on the cornea of the eye, when we face a window, which is much attended to by portrait painters; this is the light reflected from the spherical surface of the polished cornea, and brought to a focus; if the observer is placed in this focus, he sees the image of the window; if he is placed before ...

— The Botanic Garden - A Poem in Two Parts. Part 1: The Economy of Vegetation • Erasmus Darwin

... with the same disease. His medical friends at first supposed that cataracts were formed in the crystalline lens, and anticipated a cure from the operation of couching. These hopes were fallacious. The disease turned out to be in the cornea, and every attempt to restore its transparency was fruitless. In a few months the white cloud covered the whole aperture of the pupil, and Galileo became totally blind. This sudden and unexpected calamity had almost overwhelmed Galileo and ...

— The Martyrs of Science, or, The lives of Galileo, Tycho Brahe, and Kepler • David Brewster

Words linked to "Cornea" : eye, membrane, corneal, tissue layer, optic, arcus senilis, oculus, arcus