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Keratoconus.

A J Bron1

  • 1Nuffield Laboratory of Ophthalmology, University of Oxford, England, U.K.

Cornea
|January 1, 1988
PubMed
Summary
This summary is machine-generated.

Keratoconus, a corneal disorder, involves thinning and reduced tensile strength due to structural element loss. This study explores biochemical changes and proteoglycan alterations in keratoconus, impacting corneal strength.

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Area of Science:

  • Ophthalmology
  • Corneal Science
  • Biochemistry

Background:

  • Keratoconus is a bilateral corneal disorder affecting shape, potentially sporadic or genetic.
  • Early thinning suggests primary functional loss of structural elements.
  • Reduced corneal tensile strength manifests as scarring and membrane rupture.

Purpose of the Study:

  • To investigate the biochemical basis of keratoconus.
  • To characterize proteoglycan alterations in keratoconus.
  • To understand the impact of these changes on corneal strength.

Main Methods:

  • Biochemical analysis of corneal tissue.
  • Electron-histochemical techniques.
  • X-ray diffraction studies.

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Main Results:

  • Increased collagenolysis and reducible collagen cross-links observed.
  • Inconsistent evidence regarding collagen solubility and proteoglycan content.
  • Characterization of proteoglycan bridges and apparent loss of keratan sulphate.

Conclusions:

  • Biochemical alterations, particularly in proteoglycans, contribute to reduced corneal strength in keratoconus.
  • Loss of keratan sulphate may significantly impact corneal structural integrity.
  • Further research is needed to fully elucidate the mechanism by which these changes affect corneal strength.