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Coats disease

Other Names for this Disease
  • Retinal telangiectasis
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Coats disease is an eye disorder characterized by abnormal development of the blood vessels of the retina (retinal telangiectasia). Signs and symptoms differ depending on the extent and size of blood vessels involved; some individuals are asymptomatic while others are severly affected. Symptoms typically begin at an early age (most commonly between ages 6 to 8) and may include vision loss; crossed eyes (strabismus); a white mass in the pupil behind the lens of the eye (leukokoria); and/or retinal detachment. In most cases, only one eye is affected (unilateral) but in rare cases both eyes are affected (bilateral). The cause is not exactly known but some cases may be due to somatic mutations in the NDP gene. Treatment depends on the symptoms present and may include cryotherapy, laser therapy, photocoagulation and/or surgery.[1][2]
Last updated: 12/5/2011


  1. Coats disease. NORD. April 21, 2008; Accessed 12/2/2011.
  2. Del Longo A. Coats disease. Orphanet Encyclopedia. September 2004; Accessed 12/2/2011.
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Basic Information

  • The National Organization for Rare Disorders (NORD) is a federation of more than 130 nonprofit voluntary health organizations serving people with rare disorders. Click on the link to view information on this topic.

In Depth Information

  • The Online Mendelian Inheritance in Man (OMIM) is an catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs.  Access to this database is free of charge.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Coats disease. Click on the link to view a sample search on this topic.