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Related Experiment Videos

Color vision defects in adrenomyeloneuropathy.

G H Sack1, M B Raven, H W Moser

  • 1Kennedy Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21205.

American Journal of Human Genetics
|June 1, 1989
PubMed
Summary

Abnormal color vision is common in adrenomyeloneuropathy (AMN) patients, suggesting a genetic link. This proximity may reveal contiguous gene defects in Xq28.

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Area of Science:

  • Genetics
  • Ophthalmology
  • Neurology

Background:

  • Adrenomyeloneuropathy (AMN) is a rare genetic disorder.
  • Previous studies suggested a potential link between AMN and visual abnormalities.

Purpose of the Study:

  • To investigate the prevalence of abnormal color vision in AMN patients.
  • To explore the relationship between AMN and visual pigment gene loci.

Main Methods:

  • Farnsworth-Munsell 100 Hue test administered to 27 AMN patients and 31 controls.
  • Analysis of color vision test scores and axes of bipolarity.

Main Results:

  • 44% of AMN patients exhibited significantly abnormal color vision scores.
  • Varied axes of bipolarity in affected patients suggest diverse genetic alterations.
  • Confirms increased frequency of abnormal color vision in AMN kindreds.

Conclusions:

  • AMN is closely linked to visual pigment loci at Xq28.
  • This genetic proximity may facilitate the study of contiguous gene defects.

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