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[Painless acanthamoeba keratitis].

K Stemberger1, B Dick, C Kramann

  • 1Universitätsklinik für Augenheilkunde und Optometrie, Medizinische Universität Innsbruck, 6020, Innsbruck. katrin@stemberger.de

Der Ophthalmologe : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft
|February 24, 2007
PubMed
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Acanthamoeba keratitis, a serious eye infection, can occur in contact lens wearers even without pain. Early suspicion and diagnosis are crucial for effective treatment of this corneal disease.

Area of Science:

  • Ophthalmology
  • Microbiology
  • Infectious Diseases

Background:

  • Herpes simplex keratitis is a common corneal infection, particularly in contact lens wearers.
  • Contact lens wear is a significant risk factor for microbial keratitis.
  • Ocular infections require prompt and accurate diagnosis for appropriate management.

Observation:

  • A 37-year-old contact lens wearer presented with worsening keratitis despite initial treatment for herpes simplex keratitis.
  • An annular corneal infiltrate developed, raising suspicion for an alternative diagnosis.
  • The patient reported no significant pain, which is atypical for some severe corneal conditions.

Findings:

  • Histological and microbiological examination of the corneal disc post-keratoplasty confirmed Acanthamoeba keratitis.

Related Experiment Videos

  • The absence of pain did not rule out the presence of a severe microbial keratitis.
  • Contact lens wear was a key factor in the patient's presentation.

    • Implications:

    • Ophthalmologists should consider Acanthamoeba keratitis in contact lens wearers presenting with unusual or worsening keratitis, even in the absence of pain.
    • Diagnostic vigilance is essential, utilizing corneal scrapings, histology, and culture for definitive diagnosis.
    • Prompt identification and treatment of Acanthamoeba keratitis are vital to prevent vision loss.