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Related Experiment Videos

[Acanthamoeba keratitis. Epidemiologic and parasitologic study].

A M Simitzis-Le Flohic1, D P Hasle, E Paniagua-Crespo

  • 1Unité de Parasitologie, C.H.U. Morvan, Brest.

Journal Francais D'Ophtalmologie
|January 1, 1989
PubMed
Summary
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Acanthamoeba keratitis, a rare but increasing eye infection, affects contact lens wearers. This study details clinical and diagnostic features of three cases, highlighting varied treatment outcomes and identifying specific Acanthamoeba species.

Area of Science:

  • Ophthalmology
  • Infectious Diseases
  • Parasitology

Background:

  • Amebic keratitis caused by Acanthamoeba is increasingly diagnosed, particularly among contact lens wearers.
  • Early and accurate diagnosis is crucial for effective management of this sight-threatening infection.

Observation:

  • The study presents three cases of Acanthamoeba keratitis diagnosed since 1986.
  • Immunological findings included reduced T4 lymphocytes in one patient and low immunoglobulin A in another.
  • Clinical presentations varied, with one patient requiring keratoplasty, another successfully treated with propamidine isethionate, and a third unresponsive to propamidine isethionate before keratoplasty.

Findings:

  • Acanthamoeba polyphaga was isolated from the first case.
  • Acanthamoeba quina and Acanthamoeba lugdunensis were isolated from the second and third cases, respectively.

Related Experiment Videos

  • These represent the first isolations of Acanthamoeba quina and Acanthamoeba lugdunensis, noted for their morphological similarity to Acanthamoeba polyphaga.

    • Implications:

    • The findings underscore the importance of species identification in Acanthamoeba keratitis for guiding treatment strategies.
    • Successful treatment outcomes depend on timely diagnosis and appropriate therapeutic interventions, including antimicrobial agents and surgical options like keratoplasty.
    • This research contributes to understanding the diversity of Acanthamoeba species causing keratitis and their clinical significance.