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Eye Health Center

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It is possible that the main title of the report Keratoconus is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.


  • Conical Cornea
  • KC

Disorder Subdivisions

  • None

General Discussion

Keratoconus is a non-inflammatory eye (ocular) condition characterized by progressive changes of the shape of the cornea. The cornea is the thin-walled, "dome-shaped" transparent region forming the front of the eyeball; it serves as a protective covering and helps to focus or bend (refract) light waves onto the retina at the back of the eye. In those with Keratoconus, slowly progressive thinning of the cornea causes it to protrude forward in a conical shape, leading to blurry vision and other vision problems. Keratoconus often begins at puberty. Although the specific underlying cause of the condition is unknown, investigators indicate that genetic factors may play some role. In addition, in some cases, Keratoconus may occur in association with a variety of other disorders.


Lighthouse International
111 E 59th St
New York, NY 10022-1202
Tel: (800)829-0500

Eye Bank Association of America
1015 18th Street, NW
Suite 1010
Washington, DC 20036
Tel: (202)775-4999
Fax: (202)429-6036

NIH/National Eye Institute
31 Center Dr
MSC 2510
Bethesda, MD 20892-2510
United States
Tel: (301)496-5248
Fax: (301)402-1065

National Keratoconus Foundation
6222 Wilshire Blvd.
Ste. 260
Los Angeles, CA 90048
Tel: (310)623-4466
Fax: (310)623-1837
Tel: (800)521-2524

Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
Tel: (301)251-4925
Fax: (301)251-4911
Tel: (888)205-2311
TDD: (888)205-3223

Cornea Research Foundation of America
9002 North Meridian Street
Ste. 212
Indianapolis, IN 46260
Tel: (317)844-5610
Fax: (317)814-2806
Tel: (800)317-3937

Corneal Dystrophy Foundation
6066 McAbee Rd.
San Jose, CA 95120
Fax: (408)490-2775
Tel: (866)807-8965

For a Complete Report:

This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to and click on Rare Disease Database under "Rare Disease Information".

The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.

It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report

This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.

For additional information and assistance about rare disorders, please contact the National Organization for Rare Disorders at P.O. Box 1968, Danbury, CT 06813-1968; phone (203) 744-0100; web site or email

Last Updated: 5/24/2008
Copyright 1988, 1989, 2001, 2002 National Organization for Rare Disorders, Inc.

WebMD Medical Reference from the National Organization for Rare Disorders

Last Updated: May 28, 2015
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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