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Related Experiment Video

Updated: May 21, 2026

Quantification of Acanthamoeba spp. Motility
07:33

Quantification of Acanthamoeba spp. Motility

Published on: September 20, 2024

Prognostic factors in Acanthamoeba keratitis.

Igor Kaiserman1, Irit Bahar, Penny McAllum

  • 1Department of Ophthalmology, Toronto Western Hospital, University of Toronto, Toronto, Ont. Igor@Dr-Kaiserman.com

Canadian Journal of Ophthalmology. Journal Canadien D'Ophtalmologie
|June 13, 2012
PubMed
Summary

Prognostic factors like initial visual acuity and infection source significantly impact Acanthamoeba keratitis (AK) outcomes. Identifying these factors helps tailor treatment for better visual prognosis in AK patients.

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Area of Science:

  • Ophthalmology
  • Infectious Diseases
  • Microbiology

Background:

  • Acanthamoeba keratitis (AK) is a severe microbial keratitis.
  • Contact lens wear is a primary risk factor for AK.
  • Early identification of prognostic factors is crucial for managing visual outcomes.

Purpose of the Study:

  • To identify prognostic factors influencing visual acuity and treatment duration in Acanthamoeba keratitis.
  • To provide clinicians with tools to predict visual prognosis and guide AK treatment.

Main Methods:

  • Retrospective analysis of 42 AK eyes from 41 patients (1999-2006).
  • Diagnosis confirmed by culture and clinical presentation.
  • Multivariate regression analysis to assess prognostic factors for visual acuity and treatment length.

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Last Updated: May 21, 2026

Quantification of Acanthamoeba spp. Motility
07:33

Quantification of Acanthamoeba spp. Motility

Published on: September 20, 2024

Main Results:

  • Most patients (64%) had multiple risk factors, predominantly contact lens wear (92.9%).
  • Initial visual acuity improved from 20/200 to 20/50 post-treatment.
  • Factors predicting better visual outcomes included swimming-related infections, absence of epithelial defects, and chlorhexidine treatment; steroid treatment was associated with worse outcomes.

Conclusions:

  • Several prognostic factors can predict visual outcomes in Acanthamoeba keratitis.
  • These factors aid clinicians in evaluating visual damage and customizing treatment strategies.