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Related Experiment Videos

Non-Acanthamoeba amebic keratitis

H S Dua1, A Azuara-Blanco, M Hossain

  • 1Department of Ophthalmology, Queen's Medical Centre-University Hospital, Nottingham, United Kingdom.

Cornea
|November 20, 1998
PubMed
Summary
This summary is machine-generated.

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Two cases of non-Acanthamoeba amebic keratitis were identified, presenting symptoms similar to Acanthamoeba keratitis. One case resolved with treatment, highlighting a rare cause of infectious keratitis.

Area of Science:

  • Ophthalmology
  • Infectious Diseases
  • Microbiology

Background:

  • Acanthamoeba keratitis is a severe microbial keratitis often associated with contact lens wear.
  • Distinguishing Acanthamoeba keratitis from other forms of microbial keratitis is crucial for appropriate management.

Observation:

  • Two patients presented with clinical signs mimicking Acanthamoeba keratitis.
  • Amebic cysts, Vahlkampfia in one and Naegleria in the other, were identified from contact lens cultures.
  • One patient's keratitis resolved with topical polyhexamethylene biguanide and propamidine treatment.

Findings:

  • Non-Acanthamoeba amebic keratitis was diagnosed based on clinical presentation, contact lens cultures, and treatment response.
  • This study reports the first instance of keratitis associated with Naegleria contamination of contact lenses.

Related Experiment Videos

  • Vahlkampfia and Naegleria represent less common etiologies of amebic keratitis.

    • Implications:

    • Clinicians should consider non-Acanthamoeba species in the differential diagnosis of microbial keratitis, especially in contact lens wearers.
    • Contact lens hygiene and disinfection protocols are critical to prevent contamination with various amebic species.
    • Further research is needed to understand the prevalence and treatment of non-Acanthamoeba keratitis.