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Updated: Jan 20, 2026

An Introduction to Worm Lab: from Culturing Worms to Mutagenesis
Published on: January 11, 2011
Rare cause of floaters: A motile live worm in vitreous cavity
Renu P Rajan1, Soumya Jena1, N Obuli Ramachandran1
1Vitreo-Retinal Services, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Madurai, Tamil Nadu, India.
Abstract:
Ocular filariasis commonly presents as subconjunctival or eyelid nodules. We report a rare case of a live, motile worm causing floaters. The worm was isolated from the vitreous cavity and revealed to be Dirofilaria repens. Correct recognition of the worm is necessary as human dirofilariasis does not present as microfilaremia and does not require systemic therapy; in contrast to other causes of ocular filariasis, which require systemic therapy. As ophthalmologist may be the first physician to encounter such patients, a high index of suspicion is required for timely and adequate management.
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