Definitions for keratoconus
ker·a·to·conus

Princeton's WordNetRate this definition:0.0 / 0 votes

1. keratoconusnoun

   abnormal cone-shaped protrusion of the cornea of the eye; can be treated by epikeratophakia

WiktionaryRate this definition:0.0 / 0 votes

1. keratoconusnoun

   A degenerative non-inflammatory disorder of the eye in which structural changes within the cornea cause it to thin and change to a more conical shape than its normal even curve.

2. Etymology: From (for cone).

WikipediaRate this definition:0.0 / 0 votes

1. Keratoconus

   Keratoconus (KC) is a disorder of the eye that results in progressive thinning of the cornea. This may result in blurry vision, double vision, nearsightedness, irregular astigmatism, and light sensitivity leading to poor quality-of-life. Usually both eyes are affected. In more severe cases a scarring or a circle may be seen within the cornea.While the cause is unknown, it is believed to occur due to a combination of genetic, environmental, and hormonal factors. Patients with a parent, sibling, or child who has keratoconus have 15 to 67 times higher risk in developing corneal ectasia compared to patients with no affected relatives. Proposed environmental factors include rubbing the eyes and allergies. The underlying mechanism involves changes of the cornea to a cone shape. Diagnosis is most often by topography. Topography measures the curvature of the cornea and creates a colored "map" of the cornea. Keratoconus causes very distinctive changes in the appearance of these maps, which allows doctors to make the diagnosis. Initially the condition can typically be corrected with glasses or soft contact lenses. As the disease progresses, special contact lenses (such as scleral contact lenses) may be required. In most people the disease stabilizes after a few years without severe vision problems. In 2016, the FDA approved corneal collagen cross-linking to halt the progression of keratoconus. In some cases, when the cornea becomes dangerously thin or when sufficient vision can no longer be achieved by contact lenses due to steepening of the cornea, scarring or lens intolerance, corneal cross-linking is not an option and a corneal transplant may be required. Keratoconus affects about 1 in 2,000 people. However, some estimates suggest that the incidence may be as high as 1 in 400 individuals. It occurs most commonly in late childhood to early adulthood. While it occurs in all populations it may be more frequent in certain ethnic groups such as those of Asian descent. The word is from the Greek kéras meaning cornea and the Latin cōnus meaning cone.

WikidataRate this definition:5.0 / 1 vote

1. Keratoconus

   Keratoconus is a degenerative disorder of the eye in which structural changes within the cornea cause it to thin and change to a more conical shape than its normal gradual curve. Keratoconus can cause substantial distortion of vision, with multiple images, streaking and sensitivity to light all often reported by the patient. It is typically diagnosed in the patient's adolescent years. If afflicting both eyes, the deterioration in vision can affect the patient's ability to drive a car or read normal print. In most cases, corrective lenses fitted by a specialist are effective enough to allow the patient to continue to drive legally and likewise function normally. Further progression of the disease may require surgery, for which several options are available, including intrastromal corneal ring segments, cross-linking, mini asymmetric radial keratotomy and, in 25% of cases, corneal transplantation. Estimates of the prevalence for keratoconus range from 1 in 500 to 1 in 2000 people, but difficulties with differential diagnosis cause uncertainty as to its prevalence. It seems to occur in populations throughout the world, although it is observed more frequently in certain ethnic groups, such as South Asians. Environmental and genetic factors are considered possible causes, but the exact cause is uncertain. It has been associated with detrimental enzyme activity within the cornea, and is more common in patients with Down syndrome.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Keratoconus

   A noninflammatory, usually bilateral protrusion of the cornea, the apex being displaced downward and nasally. It occurs most commonly in females at about puberty. The cause is unknown but hereditary factors may play a role. The -conus refers to the cone shape of the corneal protrusion. (From Dorland, 27th ed)

Matched Categories

1. • Astigmatism

How to pronounce keratoconus?

1. Alex

   US English

   David

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   Mark

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   Daniel

   British

   Libby

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   Mia

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   Australian

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   Australian

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   Neerja

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   Tessa

   South African

How to say keratoconus in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of keratoconus in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of keratoconus in Pythagorean Numerology is: 7

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=keratoconus
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Keratoconus
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Keratoconus
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=keratoconus