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Pseudokeratoconus caused by rosacea.

D Dursun1, A M Piniella, S C Pflugfelder

  • 1Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami School of Medicine, Miami, Florida, USA.

Cornea
|July 27, 2001
PubMed
Summary
This summary is machine-generated.

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Chronic ocular rosacea can cause inferior corneal thinning and high astigmatism, mimicking keratoconus. This suggests a link between rosacea, tear film instability, and corneal changes.

Area of Science:

  • Ophthalmology
  • Corneal Diseases
  • Dermatology

Background:

  • Ocular rosacea is a chronic inflammatory condition affecting the eyelids and ocular surface.
  • Keratoconus is a progressive thinning disorder of the cornea leading to irregular astigmatism.

Observation:

  • A patient with long-standing ocular rosacea presented with inferior corneal thinning and high astigmatism.
  • Videokeratoscopy and corneal tomography revealed asymmetric inferior corneal steepening and peripheral thinning.
  • Delayed tear fluorescein clearance was noted in the affected eye.

Findings:

  • The patient exhibited features consistent with keratoconus, including significant astigmatism (5.9D and 7.3D).
  • Corneal pachymetry showed maximal thinning in the inferior periphery, contrasting with normal central thickness.

Related Experiment Videos

  • Inferior corneal opacification was also observed.

    • Implications:

    • Chronic ocular rosacea may be an etiological factor in developing keratoconus-like corneal changes.
    • The inferior pattern of corneal thinning may result from chronic exposure to inflammatory mediators in the tear meniscus.
    • This association highlights the importance of managing ocular surface inflammation in rosacea patients.