Prognostic factors for successful Baerveldt glaucoma implant surgery for refractory glaucoma after multiple surgeries.

Abstract

To determine the prognostic factors for success 3years after Baerveldt glaucoma implant (BGI) surgery. Single-center retrospective clinical study. We analyzed 27 eyes (24 patients) treated with BGI surgery between 2012 and 2016 at Osaka University Hospital. Patients were followed for a minimum of 3years postoperatively. We analyzed the success rates and risk factors. Failure was defined as the need for additional surgery for IOP reduction, loss of light perception, and intraocular pressure (IOP) ≧22mmHg (definition 1) or ≧17mmHg (definition 2) at two consecutive follow-up visits. The mean number of previous eye surgeries was 4.1 ± 3.3. The success rates were 81.5% and 77.8%, respectively, 1year and 3years after surgery based on definition 1 and 51.9% and 48.2%, respectively, based on definition 2. The early and late surgical complication rates, respectively, were 29.6% and 22.2%. An IOP 2months after BGI surgery of ≧17mmHg and the number of previous eye surgeries were significant risk factors for failure based on definition 2. The long-term results and complication rates after BGI surgery for refractory glaucoma in our hospital were similar to previous reports, and the IOP 2months after BGI surgery and the number of previous eye surgeries were associated with the prognosis.