[Unilateral iritis by cysticercal larva in the anterior chamber]

An 8-year-old girl complained of progressive pain, visual loss and photophobia in her right eye for 1 week. Treatment with local steroids for acute iritis had not been successful. Slitlamp examination revealed a marked cellular and fibrinous inflammatory reaction of the anterior chamber and a whitish, fibrin-like structure on the surface of the iris. There was mild serum eosinophilia and leucocytosis. The suspected organic material was removed surgically. By light and electron microscopy, parts of the wall of a helminthic parasite were discovered, anatomically consistent with the diagnosis of an immature stage of Taenia solium found in cysticercosis. Such cases of intra-ocular parasitosis are described very rarely but might still occur, although there is no history of suspicious typical exposition to parasites. It is important to know that eosinophilia may be insignificant or even absent and that complete surgical removal will be the only successful treatment.