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Related Experiment Videos

Human Thelaziasis occurrence in Taiwan.

Yih-Ju Yang1, Tzu-Hsien Liag, Song-Hsiung Lin

  • 1Department of Ophthalmology, Fong-Yuan Hospital, Department of Health, Executive Yuan, Taichung 420, Taiwan.

Clinical & Experimental Optometry
|January 25, 2006
PubMed
Summary

A woman experienced eye swelling and itching due to a parasitic eyeworm infection, Thelazia callipaeda. This case highlights the rare occurrence of this zoonotic disease in Taiwan, transmitted by flies.

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Area of Science:

  • Ophthalmology
  • Parasitology
  • Zoonotic Diseases

Background:

  • Thelazia callipaeda, a parasitic eyeworm, is known to cause ocular infections in humans and animals.
  • Infection is typically transmitted through the intermediate host, flies, which act as vectors.
  • While prevalent in parts of Asia, ocular thelaziasis is infrequently reported in Taiwan.

Observation:

  • A 62-year-old female patient presented with symptoms of unilateral eye swelling and itching.
  • Clinical examination revealed an infestation by the parasitic eyeworm, Thelazia callipaeda.
  • The patient's history and environmental factors were evaluated for potential infection routes.

Findings:

  • The patient was diagnosed with ocular thelaziasis caused by Thelazia callipaeda.

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  • The role of flies as vectors in transmitting the parasite to humans was confirmed in this case.
  • Discussion of potential infection mechanisms specific to the patient's circumstances.

    • Implications:

    • This case contributes to the limited documented instances of Thelazia callipaeda ocular infections in Taiwan.
    • Highlights the importance of considering parasitic eyeworm infections in differential diagnoses for ocular symptoms.
    • Emphasizes the need for increased awareness and surveillance of zoonotic diseases transmitted by vectors.