“…Most of the studies lasted for at least 1 year, with 26 (30%) lasting for 2 or more years. Many of the technologies and surgical techniques were each described by a small number of prospective studies ( Figure 1) including endocyclophotocoagulation (ECP), [7][8][9][10][11] MicroPulse, 12,13 Ultrasound-based procedures, 14,15 YAG gonio procedures, [16][17][18] micro trabecular procedures, [19][20][21][22][23] Diathermy-based procedures, 24,25 Excimer Laser, 26 Kahook Dual Blade (KDB), 27,28 Hydrus, [29][30][31] and CyPass. [32][33][34][35][36] iStent, Trabectome, and Xen had the highest number of prospective studies.…”