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Ocular thelaziasis: A case report from Assam, India
Runumi Chowdhury1, Mayuri Gogoi1, Anjan Sarma1
1Department of Microbiology, Gauhati Medical College, Guwahati, Assam, India.
Tropical Parasitology
|January 30, 2019
Summary
A case of human ocular thelaziasis was discovered during cataract surgery. Two Thelazia callipaeda worms were found in the eye, highlighting this rare condition and its potential for ocular morbidity.
Area of Science:
- Ophthalmology
- Veterinary Ophthalmology
- Parasitology
Background:
- Human ocular thelaziasis is a parasitic infection of the eye caused by Thelazia eyeworms.
- It is a zoonotic disease, primarily affecting animals, with rare human cases reported globally.
- Thelazia callipaeda is the most common eyeworm species implicated in human ocular infections.
Observation:
- A 58-year-old farmer presented with diminished vision in his left eye, diagnosed as a cataract.
- During routine cataract surgery, two live, mobile, translucent worms were unexpectedly discovered and removed from the conjunctival fornix.
- The removed specimens were identified morphologically as adult female Thelazia callipaeda.
Findings:
- The case highlights the accidental intraoperative discovery of ocular thelaziasis.
- Successful removal of the Thelazia callipaeda parasites was achieved during cataract surgery.
- The presence of eyeworms can lead to ocular discomfort and potential vision impairment.
Implications:
- This case underscores the importance of considering parasitic infections in ophthalmological practice, even in unexpected circumstances.
- Ocular thelaziasis, though rare in humans, can cause significant ocular morbidity if left untreated.
- Early diagnosis and removal of Thelazia eyeworms are crucial for preventing complications and preserving vision.
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