Table 5 Reduction in intraocular pressure from baseline (mm Hg).

Follow‐up time point (months)	Previous ALT
	Yes			No
	180°	360°	p Value*	None	p Value†*	p Value‡*
A (SLT group)
3	−4.1 (1.43) n = 13	−8.0 (2.565) n = 10	0.001	−4.6 (0.709) n = 53	0.074	0.001
6	−7.2 (1.503) n = 13	−6.0 (3.38) n = 10	0.264	−5.6 (0.629) n = 56	0.001	0.409
12	−4.8 (2.128) n = 10	−7.1 (2.85) n = 9	0.061	−5.7 (0.766) n = 54	0.018	0.003
B (ALT group)
3	−4.3 (0.874) n = 18	−2.1 (1.925) n = 12	0.001	−4.3 (0.69) n = 43	1.000	0.001
6	−5.0 (0.881) n = 23	−4.9 (2.184) n = 11	0.849	−5.1 (0.708) n = 45	0.614	0.603
12	−7.0 (1.051) n = 22	−4.5 (1.718) n = 11	0.001	−6.0 (0.704) n = 41	0.001	0.001

ALT, argon laser trabeculoplasty; SLT, selective laser trabeculoplasty.

*180° v 360° previous ALT; *180°† versus no previous ALT; ‡360° versus no previous ALT.