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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

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