Thelaziasis in an urban woman in Beijing: a case report and literature review
Abstract
BACKGROUND: Thelaziasis is a zoonotic disease mainly caused by Thelazia callipaeda (Spirurida, Thelaziidae, Thelazia), which can cause mild to severe signs and lesions, such as foreign body sensation, itching, tearing, eye pain, conjunctival bleeding, conjunctivitis, corneal ulcers, and even blindness. Thelaziasis cases have been reported mainly in agricultural areas and areas with high potential for contact with domestic animals [1].
CASE PRESENTATION: We report a case of Thelazia callipaeda infection in the right eye of a 41-year-old woman working in an office. The patient presented with persistent foreign body sensation, pruritus, and redness despite initial treatment with polyethylene glycol and levofloxacin eye drops. Subsequent examination revealed the presence of multiple Thelazia callipaeda worms, which were successfully removed. Postoperative treatment with gatifloxacin eye ointment resulted in significant symptom relief with no recurrence over two months.
CONCLUSIONS: This case highlights the thelaziasis in urban settings, emphasizing the need for ophthalmologists to consider parasitic infections in differential diagnosis even in well-maintained environments. Then, we provided an overview of human thelaziasis in China by mining publicly available databases from 2014 to 2023, suggesting a difference in regional distribution that warrants further epidemiological studies.
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