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Confocal microscopy in posterior polymorphous corneal dystrophy.

A G Chiou1, S C Kaufman, R W Beuerman

  • 1Louisiana State University Eye Center, New Orleans, LA 70112-2234, USA.

Ophthalmologica. Journal International D'Ophtalmologie. International Journal of Ophthalmology. Zeitschrift Fur Augenheilkunde
|July 27, 1999
PubMed
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Confocal microscopy reveals distinct Descemet's membrane changes in posterior polymorphous corneal dystrophy (PPMD). This imaging technique aids in diagnosing PPMD, especially when other methods fail due to endothelial decompensation.

Area of Science:

  • Ophthalmology
  • Corneal Imaging
  • Microscopy

Background:

  • Posterior polymorphous corneal dystrophy (PPMD) is a rare, inherited corneal disease.
  • Diagnosis often relies on clinical examination and specular microscopy.
  • Endothelial decompensation can obscure characteristic findings.

Observation:

  • Confocal microscopy was used to examine two patients with PPMD.
  • A white-light tandem scanning confocal microscope with a 24x/0.60 contact objective was utilized.
  • Prospective examination focused on identifying microstructural alterations.

Findings:

  • Distinct patterns were observed at the Descemet's membrane level.
  • One patient exhibited roundish hyporeflective images.
  • The other patient showed hyporeflective bands.

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  • Both patients presented with patchy hyperreflective areas.

    • Implications:

    • Confocal microscopy can identify characteristic PPMD alterations in Descemet's membrane.
    • This technique offers diagnostic value, particularly in cases of endothelial decompensation.
    • It may be superior to slit-lamp and specular microscopy when corneal endothelium is compromised.