Detection of Escherichia fergusonii by PCR-based DNA sequencing in a case of delayed-onset chronic endophthalmitis after cataract surgery.

We report a case of chronic low-grade endophthalmitis after cataract surgery presenting with recurrent episodes of severe anterior chamber reactions and hypopyon uveitis caused by Escherichia fergusonii , which was isolated from vitreous aspirate by polymerase chain reaction–based DNA sequencing. Polymerase chain reaction has emerged as an essential, powerful, and rapid laboratory diagnostic technique and a useful adjunct to the conventional gold standard. Financial Disclosure No author has a financial or proprietary interest in any material or method mentioned.