Figure 1: The cumulative success of the two-stage (straight line) and the complete one stage (dotted line) of the 350-mm2 Baerveldt implantation over a 24-month period. The life-table analysis for the complete BVI includes 67 eyes at baseline, 49 eyes at 12 months, and 47 eyes at 24 months. The life-table analysis for the two-stage BVI includes 66 eyes at baseline, 54 eyes at 12 months, and 53 eyes at 24 months.