title: Rhizobium radiobacter: A Recently Recognized Cause of Bacterial Keratitis.
abstract: OBJECTIVE
  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.
authors.affiliation: *Department of Ophthalmology, Queen Elizabeth Hospital, Bridgetown, Barbados;†Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami Miller School of Medicine, Miami, FL;‡Department of Ophthalmology, Loyola University Chicago, Maywood, IL;§University of Miami Miller School of Medicine, Miami, FL; and‖Ocular Microbiology Laboratory, Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami Miller School of Medicine, Miami, FL.
authors.forename: Nigel H
authors.initials: NH
authors.lastname: Barker
authors.forename: Jordan M
authors.initials: JM
authors.lastname: Thompson
authors.forename: Martin G
authors.initials: MG
authors.lastname: Mullen
authors.forename: Melissa A
authors.initials: MA
authors.lastname: Weekes
authors.forename: Linda N
authors.initials: LN
authors.lastname: Nguyen
authors.forename: Crystal K M
authors.initials: CK
authors.lastname: Haynes
authors.forename: Darlene
authors.initials: D
authors.lastname: Miller
mesh_terms: D000328:Adult; D016960:Agrobacterium tumefaciens / Q000302:isolation & purification*; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D003320:Corneal Ulcer / Q000175:diagnosis / Q000188:drug therapy / Q000382:microbiology*; D015818:Eye Infections, Bacterial / Q000175:diagnosis / Q000188:drug therapy / Q000382:microbiology*; D005260:Female; D016905:Gram-Negative Bacterial Infections / Q000175:diagnosis / Q000188:drug therapy / Q000382:microbiology*; D006801:Humans; D008297:Male; D008826:Microbial Sensitivity Tests; D012189:Retrospective Studies; D014792:Visual Acuity; D055815:Young Adult
chemical_list: D000900:Anti-Bacterial Agents