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Related Experiment Videos

Relationship between corneal edema and topography

M E Rom1, W B Keller, C J Meyer

  • 1Division of Ophthalmology, Cleveland Clinic Foundation, OH 44195, USA.

The CLAO Journal : Official Publication of the Contact Lens Association of Ophthalmologists, Inc
|July 1, 1995
PubMed
Summary
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Corneal edema can develop without significant changes in corneal topography. This study found no strong correlation between corneal thickening and topographic alterations, even with induced edema.

Area of Science:

  • Ophthalmology
  • Corneal Physiology

Background:

  • Corneal edema is a known complication in various ocular conditions.
  • Understanding its impact on corneal topography is crucial for accurate diagnosis and management.

Purpose of the Study:

  • To investigate the relationship between induced corneal edema and changes in corneal topography.
  • To determine if corneal thickening correlates with topographic alterations.

Main Methods:

  • 10 subjects underwent induced corneal edema in one eye using a nitrogen chamber goggle for 2 hours.
  • Corneal thickness (pachymetry) and topography were measured before and after exposure.
  • The contralateral eye served as a control.

Main Results:

  • All exposed corneas showed significant thickening, with central cornea thickening by 16.4%.

Related Experiment Videos

  • No significant changes in corneal topography were observed, except for a slight decrease in nasal corneal power.
  • No significant correlation was found between the degree of corneal thickening and topographic changes.

    • Conclusions:

    • Corneal edema can occur independently of significant changes in corneal topography.
    • Topographic assessment may not always reflect edema-induced stromal swelling.