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Related Experiment Videos

Corneal epithelium in keratoconus

K Tsubota1, Y Mashima, H Murata

  • 1Department of Ophthalmology, Tokyo Dental College, Chiba.

Cornea
|January 1, 1995
PubMed
Summary

Specular microscopy reveals progressive corneal epithelial cell changes in keratoconus patients. These changes, including cell enlargement and elongation, are linked to disease severity, not contact lens wear.

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Area of Science:

  • Ophthalmology
  • Corneal Science
  • Cell Biology

Background:

  • Keratoconus is a progressive corneal ectasia.
  • Epithelial cell morphology in keratoconus is not fully understood.
  • Contact lens wear is common among keratoconus patients, raising questions about its role in epithelial changes.

Purpose of the Study:

  • To investigate corneal epithelial cell morphology in keratoconus patients using specular microscopy.
  • To correlate epithelial changes with keratoconus severity.
  • To differentiate disease-related changes from contact lens-induced alterations.

Main Methods:

  • Specular microscopy was used to examine the corneal epithelium of 20 keratoconus patients.
  • Patients were categorized into early, intermediate, and advanced keratoconus groups.
  • A control group of hard contact lens wearers without corneal pathology was included for comparison.

Main Results:

  • Early keratoconus showed superficial cell enlargement.
  • Intermediate and advanced stages exhibited prominent elongated cells, irregular configurations, and nucleated cells.
  • Mean epithelial cell area significantly increased with keratoconus severity (early: 906 µm², intermediate: 1,416 µm², advanced: 1,641 µm²).
  • Shape factor also varied with disease stage.
  • Control group showed no epithelial abnormalities.

Conclusions:

  • Corneal epithelial changes in keratoconus are progressive and severity-dependent.
  • The observed epithelial alterations are intrinsic to keratoconus, not caused by contact lens wear.
  • Specular microscopy is a valuable tool for assessing epithelial changes in keratoconus.

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