Table 2.

Preoperative and Postoperative Intraocular Pressures (mmHg) Compared by Mixed-Effects Regression Model.

Periods	Total			µLOT Alone			µLOT + Cataract Surgery
	No. Eyes	Mean ± SD (Range)	p Value ‡	No. Eyes	Mean ± SD (Range)	p Value ‡	No. Eyes	Mean ± SD (Range)	p Value ‡
Preoperative	560	20.2 ± 7.0 (10, 69)		159	22.4 ± 8.6 (12, 69)		401	19.3 ± 6.0 (10, 63)
3 days	547	9.7 ± 5.2 (1, 51)	<0.0001	154	10.9 ± 5.7 (4, 44)	<0.0001	393	9.3 ± 5.0 (1, 51)	<0.0001
1–2 weeks	546	14.1 ± 6.1 (1, 46)	<0.0001	155	16.0 ± 7.0 (3, 42)	<0.0001	391	13.4 ± 5.5 (1, 46)	<0.0001
1 month	506	13.5 ± 5.3 (0, 59)	<0.0001	142	14.8 ± 5.5 (0, 40)	<0.0001	364	13.0 ± 5.2 (1, 59)	<0.0001
3 months	431	12.9 ± 3.5 (1, 30)	<0.0001	118	14.4 ± 4.1 (1, 30)	<0.0001	313	12.3 ± 3.0 (3, 25)	<0.0001
6 months	369	13.0 ± 3.5 (3, 29)	<0.0001	99	14.4 ± 3.7 (7, 29)	<0.0001	270	12.4 ± 3.3 (3, 29)	<0.0001
9 months	311	13.1 ± 3.6 (4, 32)	<0.0001	86	14.6 ± 3.6 (7, 32)	<0.0001	225	12.5 ± 3.4 (4, 23)	<0.0001
12 months	265	13.2 ± 4.2 (4, 51)	<0.0001	64	14.4 ± 3.0 (8, 21)	<0.0001	201	12.8 ± 4.5 (4, 51)	<0.0001
18 months	204	12.9 ± 3.6 (4, 27)	<0.0001	53	14.4 ± 3.7 (7, 23)	<0.0001	151	12.3 ± 3.5 (4, 27)	<0.0001
24 months	133	12.8 ± 3.7 (5, 38)	<0.0001	37	13.9 ± 3.2 (9, 20)	<0.0001	96	12.4 ± 3.8 5, 38)	<0.0001
30 months	74	12.8 ± 3.6 (6, 25)	<0.0001	21	13.2 ± 4.0 (6, 19)	0.0005	53	12.6 ± 3.4 (8, 25)	<0.0001
36 months	47	13.3 ± 3.3 (7, 25)	<0.0001	12	14.9 ± 3.9 (11, 25)	0.0072	35	12.7 ± 2.8 (7, 24)	<0.0001
Final visit	549	13.9 ± 5.6 (4, 59)	<0.0001	157	15.5 ± 6.3 (6, 41)	<0.0001	392	13.3 ± 5.2 (4, 59)	<0.0001
		p < 0.0001 †			p < 0.0001 †			p < 0.0001 †

Data are expressed as means ± standard deviations (range). † p values are calculated using the mixed-effects regression model. ‡ p values are calculated using the paired t-test between preoperative and respective time period values. Abbreviations: µLOT, microhook trabeculotomy; SD, standard deviation.