Prospective Randomized Study Comparing Combined Phaco-ExPress and Phacotrabeculectomy in Open Angle Glaucoma Treatment: 12-Month Follow-Up

Table 2

Intraocular pressure (IOP) mean values, median values, standard deviations, and range in the phaco-ExPress (P-ExPress) and phacotrabeculectomy (P-Trab) groups at specific times after surgery.

Time	P-ExPress			P-Trab
	Mean (SD)	Median	Range	Mean (SD)	Median	Range
Pre-op	26.4 ± 9.3	25.00	12–50	27.9 ± 12.9	25.00	12–62	0.877
1st day	17.6 ± 9.0	16.00	4–29	16.6 ± 6.9	16.00	3–31	0.867
7th day	16.1 ± 7.6	14.00	7–23	17.5 ± 5.9	18.00	3–19	0.236
1st month	17.8 ± 11.8	16.00	8–27	16.5 ± 5.1	16.00	10–26	0.653
3rd month	15.0 ± 4.1	16.00	5–23	14.7 ± 3.4	15.00	7–24	0.645
6th month	14.9 ± 3.6	15.00	7–22	16.1 ± 3.2	16.00	8–23	0.281
9th month	15.8 ± 6.6	17.00	9–26	15.1 ± 3.2	15.00	9–25	0.318
12th month	17.1 ± 5.0	17.50	7–26	15.9 ± 2.7	16.00	8–26	0.475

P-ExPress: phaco-ExPress group; P-Trab: phacotrabeculectomy group; SD: standard deviation; Pre-op: preoperatively, Mann-Whitney test.