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Case Reports
. 2016 May;35(5):679-82.
doi: 10.1097/ICO.0000000000000780.

Rhizobium radiobacter: A Recently Recognized Cause of Bacterial Keratitis

Nigel H Barker  1 , Jordan M Thompson, Martin G Mullen, Melissa A Weekes, Linda N Nguyen, Crystal K M Haynes, Darlene Miller
Affiliations
Case Reports

Rhizobium radiobacter: A Recently Recognized Cause of Bacterial Keratitis

Nigel H Barker et al. Cornea. 2016 May.

Abstract

Purpose: To present the first reported cases of keratitis caused by Rhizobium radiobacter.

Methods: A retrospective review of an observational case series from 2 institutions.

Results: There were 4 cases of microbiologically proven R. radiobacter. Three of these patients were contact lens wearers. The patient in case 4 defaulted from follow-up after receipt of the culture result. Keratitis in the other cases resolved with variable clinical courses once culture-directed therapy was instituted.

Conclusions: R. radiobacter is a member of the genus Rhizobium. It is a gram-negative bacillus and was previously identified as an opportunistic pathogen in nonophthalmic infections and in a few cases of endophthalmitis. To our knowledge, we have described the clinical presentation, management, and treatment outcomes of the first reported cases of keratitis caused by R. radiobacter.

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