A 75-year-old female was transferred to our clinic three days after uneventful phacoemulsification with intraocular lens (IOL) implantation in the right eye that had been carried out at a local clinic. Under the diagnosis of postoperative endophthalmitis, the patient underwent pars plans vitrectomy, IOL explantation, silicone oil tamponade, and intravitreal antibiotic injection. Even after the procedure, the patient's condition was further aggravated, and extended-spectrum beta-lactamase-producing Escherichia coli were identified on bacterial identification test. Although meropenem was applied locally and systemically, the patient had no-light perception visual acuity.
Keywords: Beta-lactamases; Endophthalmitis; Escherichia coli.