Table 2.

Comparison of IOP and IOP reduction at each time period in the two groups [n; Percentage (%)]

	Preoperative IOP	Post.1d IOP reduction(%)	Post.1w IOP reduction(%)	Post .1 m IOP reduction(%)	Post. 3 m IOP reduction(%)	Post .6 m IOP reduction(%)	P a
UCP group	47.68 ± 9.65	36.80 ± 16.48 22.82	19.10 ± 4.98 59.92	17.18 ± 6.49 63.97	17.38 ± 3.11 63.56	15.75 ± 4.79 66.97	< 0.05a
AGV group	44.93 ± 10.61	14.38 ± 5.73 68.00	15.63 ± 5.49 65.22	17.18 ± 4.54 61.78	16.10 ± 5.25 64.17	17.25 ± 5.53 61.62	< 0.05a
P	0.18	< 0.01	0.02	0.510	0.546	0.04

UCP = Ultrasound cycloplasty; AGV = Ahmed glaucoma valve; IOP = Intraocular pressure

^aP<0.05 compared with the same group before surgery