Hazarika, Manali and Pai, Vijaya H and Khanna, Vinay and Reddy, Harish and Tilak, Kriti and Chawla, Kiran (2016) Rare Case of Polymicrobial Keratitis With Balantidium coli. Cornea, 35 (12). pp. 1665-1667.

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Abstract

Purpose: To report a rare case of polymicrobial keratitis due to Balantidium coli and gram-negative bacteria, Pseudomonas aeruginosa and Klebsiella pneumoniae, in a soft contact lens (CL) wearer.Methods: We report a case of CL-related keratitis due to B. coli,P. aeruginosa, and K. pneumoniae.Results: The culture of the corneal scrapings, the CL cleaning solution, and the CL revealed the growth of a rare ciliated parasite, B.coli, along with gram-negative bacteria, namely, P. aeruginosa and K. pneumoniae. The patient was successfully treated with topical broad-spectrum antibiotics and intravenous metronidazole.Conclusions: Polymicrobial keratitis has seldom been reported with B. coli as the causative agent. CL wear can be a risk factor for this infection. Treatment with topical antibiotics may not suffice, and the intravenous route of antiprotozoal drugs may be a useful adjunct.Increasing awareness, early diagnosis, and treatment may improve the final visual outcome.

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