If you are experiencing a medical emergency please dial 911 immediately
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.
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.
Foundation Fighting Blindness
7168 Columbia Gateway Drive, Suite 100
Columbia, MD 21046
111 E 59th St
New York, NY 10022-1202
National Association for Parents of Children with Visual Impairments (NAPVI)
P.O. Box 317
Watertown, MA 02272-0317
National Federation of the Blind
200 East Wells Street
at Jernigan Place
Baltimore, MD 21230
American Foundation for the Blind
2 Penn Plaza
New York, NY 10121
NIH/National Eye Institute
31 Center Dr
Bethesda, MD 20892-2510
MD Support - The Eyes of the Macular Degeneration Community
3600 Blue Ridge Blvd
Grandview, MO 64030
Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
Foundation Fighting Blindness (Canada)
890 Yonge Street, 12th Floor
Toronto, Ontario, M4W 3P4
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 firstname.lastname@example.org
Last Updated: 2/17/2010
Copyright 1991, 1999, 2007, 2010 National Organization for Rare Disorders, Inc.
Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.