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Thelazia callipaeda: a human case report
Parnpen Viriyavejakul1, Srivicha Krudsood, Srisuchart Monkhonmu
1Department of Tropical Pathology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand. tmpvr@mahidol.ac.th
A rare case of human thelaziasis occurred in Thailand. Five Thelazia callipaeda eyeworms were successfully removed from a patient
Area of Science:
- Ophthalmology
- Parasitology
- Veterinary Ophthalmology
Background:
- Human thelaziasis is a parasitic infection of the eye caused by eyeworms.
- Thelazia callipaeda is a nematode eyeworm transmitted by flies, commonly affecting animals but rarely humans.
Observation:
- A 31-year-old man presented with foreign body sensation and excessive tearing in his right eye.
- He reported a history of a fly near his face, followed by rubbing his eye.
Findings:
- Five adult Thelazia callipaeda eyeworms were recovered from the patient's conjunctival sac.
- Morphological identification confirmed the species as Thelazia callipaeda.
- The patient's symptoms resolved completely after worm removal.
Implications:
- This case highlights the potential for zoonotic transmission of Thelazia callipaeda to humans.
- Prompt diagnosis and removal of eyeworms are crucial for symptom resolution.
- Public health awareness regarding fly-borne ocular infections is important, especially in endemic areas.
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