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Rare Case of Polymicrobial Keratitis With Balantidium coli
Manali Hazarika1, Vijaya Pai H, Vinay Khanna
1Departments of *Ophthalmology; and†Microbiology, Kasturba Medical College, Manipal University, Manipal, Udupi, Karnataka, India.
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.
