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    Cone Dystrophy

    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.

    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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