Study	Reason for exclusion
Ascaso 1992	Study medication was not an IOP‐lowering drop.
Bergamini 1997	Non‐comparative study.
Bucci 1987	Study medications were not IOP‐lowering drops.
Champagne 2015	Study medications were not IOP‐lowering drops.
Chen 2001	Included participants who received laser peripheral iridotomy, ALT, and Nd:YAG laser capsulotomy; results not separated by type of surgery.
Chen 2005	Included participants who received laser peripheral iridotomy, ALT, and Nd:YAG laser capsulotomy; results not separated by type of surgery.
De Keyser 2017	Study medication was not an IOP‐lowering drop.
Diestelhorst 1995	Study medication was not an IOP‐lowering drop.
Gelfand 1985	Study medication was not an IOP‐lowering drop.
Herbort 1992	Study medication was not an IOP‐lowering drop.
Herbort 1993	Study medication was not an IOP‐lowering drop.
Hurvitz 1994	Dosage study; no eligible comparison group.
Jinapriya 2014	Study medication was not an IOP‐lowering drop.
Kim 1998	Study medication was not an IOP‐lowering drop.
Krupin 1992	Not an RCT.
Leung 1986	Not an RCT.
León‐Alcántara 1995	Non‐comparative study.
Ottaiano 1989	Included only participants who received laser iridotomy.
Ottaiano 1996	Unable to confirm whether study was randomized.
Pappas 1985	Study medication was not an IOP‐lowering drop.
Patel 1998	Unable to confirm whether study was randomized; included participants who received ALT or Nd:YAG capsulotomy; results not separated by type of surgery.
Realini 2010	Study medication was not an IOP‐lowering drop.
Rosenberg 1995	Dosage study; no eligible comparison group.
Shin 1996	Study medication was not an IOP‐lowering drop.
Stingu 2001	Unable to confirm whether study was randomized; included participants who received ALT, and Nd:YAG laser iridotomy; results not separated by type of surgery.
Swendris 1991a	Unable to confirm whether study was randomized; categorized by handsearchers as a CCT as no randomization was reported.
Swendris 1991b	Unable to confirm whether study was randomized; categorized by handsearchers as a CCT as no randomization was reported.
Threlkeld 1996	Dosage study; no eligible comparison group.
Vickerstaff 2015	1 study arm received only medication without LTP; no eligible comparison group.
Weinreb 1983	Study medication was not an IOP‐lowering drop.
West 1992	Study medications were not IOP‐lowering drops.

ALT: argon laser trabeculoplasty; CCT: controlled clinical trial; IOP: intraocular pressure; LTP: laser trabeculoplasty; Nd:YAG: neodymium‐doped yttrium aluminum garnet; RCT: randomized controlled trial.