Baerveldt Or Ahmed Glaucoma Valve Implantation With Pars Plana Tube Insertion In Japanese Eyes With Neovascular Glaucoma: I -Year Outcomes

Purpose: To describe the 1-year surgical outcomes of both Baerveldt glaucoma implant (B(iI) and the Ahmed glaucoma valve (AGV) implant with pars plana tube insertion in Japanese eyes with neovascular glaucoma (NVG).Patients and methods: This was a retrospective study of 21 eyes of 18 patients who had undergone BGI (10 eyes) or AGV (11 eyes) implantation. The 1-year surgical outcomes in the two groups were compared. Surgical success was defined as an intraocular pressure (IOP) of 6-21 mmHg (criterion A) or 6-18 mmHg (criterion B) with >20% reduction regardless of the use of antiglaucoma medications.Results: The mean preoperative IOP was 33.9 +/- 6.6 mmHg in the BGI group and 30.9 +/- 5.3 mmHg in the AGV group (P=0.31). The IOP at 1-year was lower in the BGI group at 10.3 +/- 5.9 mmHg than in the AGV group at 14.8 +/- 3.3 mmHg (P=0.044). The mean number of glaucoma medications at 1 year was 1.0 +/- 1.3 in the BGI group and 1.4 +/- 1.4 in the AGV group (P=0.57). The incidence of postoperative complications during the 1-year follow-up was not statistically different between the two groups; however, one eye in the BGI group lost light perception after additional surgery for Hoffman elbow exposure. The 1-year success rates of the BGI group was 60.0% and that in the AGV group was 90.9% based on criterion A (P=0.095), and 50.0% and 81.8% based on criterion 13 (P=0.074).Condusions: Significant reductions of the IOP and number of glaucoma medications were achieved at 1 year after both types of implants in Japanese eyes with NVG.