Late endophthalmitis associated with glaucoma drainage implants.

ABSTRACT

OBJECTIVE: To report the clinical course of a series of patients who had late endophthalmitis develop after glaucoma drainage implant (GDI) surgery. DESIGN: Noncomparative, interventional, consecutive case series. PARTICIPANTS: Four patients were identified with late endophthalmitis associated with Baerveldt glaucoma implants. METHODS: The medical records of all patients with endophthalmitis associated with a GDI treated at the Bascom Palmer Eye Institute or University of Florida between January 1, 1987 and December 31, 1999 were retrospectively reviewed. Patients with culture-positive endophthalmitis diagnosed more than 1 month after GDI surgery were included in this series. MAIN OUTCOME MEASURES: Visual acuity and intraocular pressure (IOP). RESULTS: Late endophthalmitis associated with Baerveldt glaucoma implants developed 7 weeks to 2 years postoperatively. Exposure of the GDI tube was present in all cases. The implant was removed in three of four patients. Visual acuity worsened from preinfection level in two of four cases. IOP was controlled at last follow-up in all patients, although replacement of the explanted GDI was required in one patient. CONCLUSIONS: Late endophthalmitis may occur after GDI surgery. Exposure of the GDI tube seems to represent a major risk factor for these infections. To prevent this potentially devastating complication, we recommend prophylactic surgical revision with a patch graft in all cases in which there is an exposed GDI tube.