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The histopathological changes of keratoconus

M Kaas-Hansen1

  • 1Department of Ophthalmology, University of Aarhus, Denmark.

Acta Ophthalmologica
|June 1, 1993
PubMed
Summary

Histopathological examination of keratoconus corneas revealed breaklines in Bowman's layer as a late phenomenon. The study found no fixed correlation between these histological changes and visual acuity loss in keratoconus patients.

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Area of Science:

  • Ophthalmology
  • Histopathology
  • Corneal Diseases

Background:

  • Keratoconus is a progressive thinning and irregular bulging of the cornea.
  • Understanding the histopathological basis of keratoconus is crucial for diagnosis and treatment.
  • Bowman's layer integrity is often compromised in corneal pathologies.

Purpose of the Study:

  • To histopathologically examine corneas affected by keratoconus.
  • To investigate the nature and significance of breaklines in Bowman's layer.
  • To correlate histopathological findings with visual acuity loss in keratoconus.

Main Methods:

  • Light microscopy was used to examine seven keratoconus corneas and two normal corneas.
  • Detailed histopathological descriptions were recorded, focusing on Bowman's layer.
  • The severity of observed changes was compared against visual acuity data.

Main Results:

  • Breaklines in Bowman's layer were identified as a late and secondary phenomenon in keratoconus.
  • No consistent correlation was found between the severity of histopathological findings and the degree of visual acuity loss.
  • Two keratoconus corneas exhibited histological changes similar to those observed in normal corneas.

Conclusions:

  • Breaklines in Bowman's layer appear to be a late-stage feature of keratoconus.
  • Visual acuity loss in keratoconus may not be directly proportional to the observed histopathological changes.
  • Further research is needed to fully elucidate the histopathology of keratoconus and its impact on vision.

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