Cone Dystrophy

National Organization for Rare Disorders, Inc.

Important
It is possible that the main title of the report Cone Dystrophy 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.

Synonyms

  • retinal cone degeneration
  • retinal cone dystrophy

Disorder Subdivisions

  • progressive cone dystrophy
  • stationary cone dystrophy

General Discussion

Cone dystrophy is a general term used to describe a group of rare eye disorders that affect the cone cells of the retina. Cone dystrophy can variably cause a variety of symptoms including decreased visual clarity (acuity) when looking straight ahead (central vision), a reduced ability to see colors and an increased sensitivity to light (photophobia). Cone dystrophy may be broken down into two broad groups - stationary and progressive. In stationary cone dystrophy symptoms tend to remain stable and are usually present at birth or early childhood. In progressive cone dystrophy symptoms slowly become worse over time. There are several different forms of cone dystrophy. The age of onset, progression and severity of cone dystrophy can vary greatly from one person to another, even among individuals with the same type of cone dystrophy. Some forms of cone dystrophy are inherited; other forms appear to occur spontaneously for no apparent reason (sporadically).

A variety of different and confusing names have been used to describe the various forms of cone dystrophy. Some researchers limit the term "cone dystrophy" to the progressive forms of the disorder. Other researchers use cone dystrophy as an umbrella term for both the stationary and progressive forms of cone dystrophy - examples of which include achromatopsia, incomplete achromatopsia, blue cone monochromatism, and X-linked progressive cone dystrophy. This report is a general overview report on stationary and progressive cone dystrophy. For more information on an individual form of cone dystrophy use the disorder's specific name as your search term in the Rare Disease Database or contact one of the organizations listed in the resources section of this report.

Resources

Foundation Fighting Blindness
7168 Columbia Gateway Drive, Suite 100
Columbia, MD 21046
Tel: (410)423-0600
Fax: (410)872-0574
Tel: (800)683-5555
TDD: (800)683-5551
Email: info@FightBlindness.org
Internet: http://www.blindness.org/

Lighthouse International
111 E 59th St
New York, NY 10022-1202
Tel: (800)829-0500
Email: info@lighthouse.org
Internet: http://www.lighthouse.org

National Association for Parents of Children with Visual Impairments (NAPVI)
P.O. Box 317
Watertown, MA 02272-0317
Tel: (617)972-7441
Fax: (617)972-7444
Tel: (800)562-6265
Email: napvi@perkins.org
Internet: http://www.napvi.org

National Federation of the Blind
200 East Wells Street
at Jernigan Place
Baltimore, MD 21230
USA
Tel: (410)659-9314
Fax: (410)685-5653
Email: nfb@nfb.org
Internet: http://www.nfb.org

American Foundation for the Blind
2 Penn Plaza
Suite 1102
New York, NY 10121
Tel: (212)502-7600
Fax: (888)545-8331
Tel: (800)232-5463
TDD: (212)502-7662
Email: afbinfo@afb.net
Internet: http://www.afb.org

NIH/National Eye Institute
31 Center Dr
MSC 2510
Bethesda, MD 20892-2510
United States
Tel: (301)496-5248
Fax: (301)402-1065
Email: 2020@nei.nih.gov
Internet: http://www.nei.nih.gov/

MD Support - The Eyes of the Macular Degeneration Community
3600 Blue Ridge Blvd
Grandview, MO 64030
USA
Tel: (816)761-7080
Fax: (816)761-7080
Email: director@mdsupport.org
Internet: http://www.mdsupport.org

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
Internet: http://rarediseases.info.nih.gov/GARD/

Foundation Fighting Blindness (Canada)
890 Yonge Street, 12th Floor
Toronto, Ontario, M4W 3P4
Canada
Tel: 4163604200
Fax: 4163600060
Tel: 8004613331
Email: info@ffb.ca
Internet: http://www.ffb.ca

Retina International
Ausstellungsstrasse 36
CH-8005
Zürich,
Switzerland
Tel: 410444441077
Fax: 410444441070
Email: christina.fasser@retina-international.org
Internet: http://www.retina-international.org

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 www.rarediseases.org 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 www.rarediseases.org or email orphan@rarediseases.org

Last Updated:  2/17/2010
Copyright  1991, 1999, 2007, 2010 National Organization for Rare Disorders, Inc.

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