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Related Experiment Videos

Ocular surface abnormalities in aniridia

K Nishida1, S Kinoshita, Y Ohashi

  • 1Department of Ophthalmology, Kyoto Prefectural University of Medicine, Japan.

American Journal of Ophthalmology
|September 1, 1995
PubMed
Summary

Aniridia patients show significant ocular surface abnormalities, including corneal opacification and increased goblet cells, indicating conjunctival invasion due to stem cell deficiency.

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Area of Science:

  • Ophthalmology
  • Cell Biology

Background:

  • Aniridia is a rare genetic disorder characterized by the absence of the iris.
  • Ocular surface abnormalities are common in aniridia, but the underlying mechanisms require further investigation.

Observation:

  • This study examined ocular surface abnormalities in 16 patients with aniridia.
  • Corneal findings included superficial opacification and vascularization in all aniridic eyes.
  • Palisades of Vogt were absent in all aniridic eyes.

Findings:

  • Goblet cell density was significantly increased on the peripheral cornea and inferior conjunctiva of aniridic eyes compared to controls.
  • Aniridic eyes showed increased goblet cell density (226 cells/mm2 peripheral cornea, 406 cells/mm2 inferior conjunctiva) versus control eyes (0 cells/mm2 and 181 cells/mm2, respectively).

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Implications:

  • The findings suggest conjunctival epithelial invasion of the cornea in aniridia.
  • This invasion is likely due to a deficiency in corneal epithelial stem cells.
  • Understanding these mechanisms is crucial for managing ocular surface disease in aniridia patients.