Rhizobium (Agrobacterium) radiobacter identified as a cause of chronic endophthalmitis subsequent to cataract extraction
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Updated: Sep 20, 2026

Intravitreal Injection and Quantitation of Infection Parameters in a Mouse Model of Bacterial Endophthalmitis
Published on: February 6, 2021
Hassan Namdari1, Sirus Hamzavi, Randall R Peairs
1Clinical Laboratories Inc, Throop, Pennsylvania 18512, USA. hnamdari@clinical.com
Abstract:
Herein, we report a case of chronic endophthalmitis caused by a ceftazidime-resistant Rhizobium radiobacter strain in a 62-year-old male. The patient underwent an uneventful cataract extraction of the right eye a week prior to the appearance of symptoms (pain, redness, and blurring vision) which developed following a golf outing. Upon admission the patient received an emergency vitrectomy. The patient remained symptomatic, and R. radiobacter was isolated repeatedly from vitreous fluid cultures over a 5-month period. Ultimately, the infection responded to intravitreal gentamicin, oral ciprofloxacin, and removal of the lens implant.
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