Schematic diagram of the right human eye showing the cornea as separated from the sclera by the corneal limbus
Details
Part of
Front of eye
System
Visual system
Function
Refract light
Identifiers
Latin
cornea
MeSH
D003315
TA98
A15.2.02.012
TA2
6744
FMA
58238
Anatomical terminology
[edit on Wikidata]
The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber. Along with the anterior chamber and lens, the cornea refracts light, accounting for approximately two-thirds of the eye's total optical power.[1][2] In humans, the refractive power of the cornea is approximately 43 dioptres.[3] The cornea can be reshaped by surgical procedures such as LASIK.[4]
While the cornea contributes most of the eye's focusing power, its focus is fixed. Accommodation (the refocusing of light to better view near objects) is accomplished by changing the geometry of the lens. Medical terms related to the cornea often start with the prefix "kerat-" from the Greek word κέρας, horn.
^Cassin, B.; Solomon, S. (1990). Dictionary of Eye Terminology. Gainesville, Florida: Triad Publishing Company.[page needed]
^Goldstein, E. Bruce (2007). Sensation & Perception (7th ed.). Canada: Thompson Wadsworth.[page needed]
^Najjar, Dany. "Clinical optics and refraction". Archived from the original on 2012-05-29.[unreliable medical source?]
^Finn, Peter (20 December 2012). "Medical Mystery: Preparation for surgery revealed cause of deteriorating eyesight". The Washington Post.
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Cornea verticillata, also called vortex keratopathy or whorl keratopathy, is a condition characterised by corneal deposits at the level of the basal epithelium...
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Alexandru Cornea (1490 – 5 March 1541), known as the Evil (Romanian: cel Rău) and scarcely numbered Alexandru III, was the Prince of Moldavia from 1540...
Keratoprosthesis is a surgical procedure where a diseased cornea is replaced with an artificial cornea. Traditionally, keratoprosthesis is recommended after...
reactions within the cornea come from surrounding vascularized tissues as well as innate immune responsive cells that reside within the cornea. The most important...
used when the human cornea loses its transparency. The term corneal opacity is used particularly for the loss of transparency of cornea due to scarring....
Victor Vlad Cornea (born 24 September 1993) is a Romanian tennis player. He reached his highest ATP doubles ranking of No. 64 on 19 February 2024. He has...
Torellia cornea is a species of small sea snail, a marine gastropod mollusk in the family Capulidae, the cap snails. The maximum recorded shell length...
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Keratitis is a condition in which the eye's cornea, the clear dome on the front surface of the eye, becomes inflamed. The condition is often marked by...
Corneal tattooing (or keratopigmentation) is the practice of tattooing the cornea of the human eye. Reasons for this practice include improvement of cosmetic...
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since it is in the cornea. LASIK surgery is performed by an ophthalmologist who uses a laser or microkeratome to reshape the eye's cornea in order to improve...
factors. The underlying mechanism involves an irregular curvature of the cornea and protective reaction changes in the lens of the eye, called lens astigmatism...
of epithelial tissue and covers the front of the cornea. It acts as a barrier to protect the cornea, resisting the free flow of fluids from the tears...
highly curved cornea and return to lens-based vision. An alternative solution, borne by some divers, is to have a very strongly focusing cornea. A unique...
stroma of the cornea (or substantia propria) is a fibrous, tough, unyielding, perfectly transparent and the thickest layer of the cornea of the eye. It...
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impracticable, since the device was to be placed in direct contact with the cornea and thus would have made blinking impossible. In 1801, Thomas Young fashioned...
Amastra cornea was a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Amastridae. This species was[when?] endemic...
for creating the corneal flap in LASIK or ALK surgery. The normal human cornea varies from around 500 to 600 μm in thickness; and in the LASIK procedure...
following pair received entry as alternates: Théo Arribagé / Victor Vlad Cornea William Blumberg / John Peers → replaced by Diego Hidalgo / John Peers Roberto...
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