Table 2.

Mean IOP compared within and among the groups over follow-up

Parametersa	Baseline	3 months	6 months	12 months	p value
	(a)	(b)	(c)	(d)	(b) vs. (a)	(c) vs. (a)	(d) vs. (a)
IOP, mm Hg
Group A	15.8±1.61	17.0±3.28	15.3±2.48	15.3±1.33	0.17	0.39	0.21
Group B	16.5±1.53	22.5±1.65	17.6±4.24	17.7±2.86	<0.001	0.58	0.17
p valueb	0.11	<0.001	0.002	<0.001	​	​	​

IOP, intraocular pressure.

^aAs mean and standard deviation (mean ± SD).

^b p value for comparison within and among the groups, Mann-Whitney test.