3. Events for adverse effects of included studies.

	Cillino 2005		El Sayyad 2000		Kobayashi 2003		Russo 2008		Yalvac 2004
	NPFS	Trab	NPFS	Trab	NPFS	Trab	NPFS	Trab	NPFS	Trab
Total number of eyes	19	21	39	39	25	25	43	50	25	25
Hyphaema	4	9	1	3	0	4	1	3	1	2
Shallow AC	1	9	0	3	0	4	0	3	Not reported	Not reported
Choroidal detachment	1	6	Not reported	Not reported	Not reported	Not reported	0	4	Not reported	Not reported
Postoperative IOP spike	3	0	Not reported	Not reported	3	0	1	2	Not reported	Not reported
Inflammation AC	1	4	0	2	Not reported	Not reported	1	2	Not reported	Not reported
Hypotony	1	8	0	1	0	5	2	4	1	7
Cataract progression	Not reported	Not reported	0	1	0	2	2	9	2	7

AC: anterior chamber
 IOP: intraocular pressure
 NPFS: non‐penetrating filtration surgery
 Trab: trabeculectomy