To report a case of Serratia marcescens endophthalmitis following phacoemulsification and posterior chamber intraocular lens implantation.

A 64-year-old male with a history of diabetes, hypertension, cardiovascular disease was referred with right ocular pain and reduced vision 1 day after cataract surgery. On admission, hypopyon on anterior chamber by slit lamp examination and anterior vitreous was hazy according to ultrasonography. We immediately performed intravitreal antibiotics injection and microbiological analysis of anterior chamber and vitreous samples was performed. On day 3, persistent cornea stormal infiltration and cornea perforation were visible and the organism was identified as S. marcescens . Despite appropriate antibiotic treatment the eye continued to deteriorate.

S. marcescens endophthalmitis was diagnosed and treated immediately, but rapid progression and outcome were unsatisfactory.