Table 4.

Intraocular pressure measured by rebound tonometry in each subject

Case	Period 1 (Weeks –2–0)				Period 2 (Weeks 0–4)				Difference (Period 2–Period 1)		p value*
	n	Mean ± SD	Range		n	Mean ± SD	Range		Mean ± SE	Range
1	57	15.4 ± 2.6	14.8–16.1		106	13.6 ± 2.1	13.2–14		–1.8 ± 0.4	–2.6– –1.1	<0.0001
2	41	11.6 ± 2.3	10.9–12.4		85	11.8 ± 2.9	11.2–12.4		+0.2 ± 0.5	–0.9– +1.2	0.7492
3	47	13.2 ± 2.6	12.4–13.9		87	13.2 ± 2	12.8–13.6		+0.1 ± 0.4	–0.7– +0.8	0.9050
4	44	12.4 ± 3	11.5–13.3		70	9.8 ± 1.9	9.3–10.2		–2.7 ± 0.5	–3.6– –1.8	<0.0001
5	57	13 ± 2.3	12.4–13.6		72	13.2 ± 2.1	12.7–13.7		+0.1 ± 0.4	–0.6– +0.9	0.6987
6	38	11.6 ± 3	10.6–12.5		64	11.2 ± 2.9	10.5–12		–0.3 ± 0.6	–1.5– +0.9	0.5826
7	66	14.2 ± 1.9	13.7–14.7		78	12.9 ± 2	12.5–13.4		–1.3 ± 0.3	–1.9– –0.6	0.0002
8	48	12.5 ± 1.9	11.9–13		79	11.4 ± 1.8	11–11.8		–1.1 ± 0.3	–1.7– –0.4	0.0021
9	44	10.1 ± 3	9.2–11		77	12 ± 2.4	11.4–12.5		+1.9 ± 0.5	0.9–2.8	0.0003
10	45	14.2 ± 2.7	13.4–15		102	14.9 ± 2.3	14.4–15.3		+0.7 ± 0.4	–0.2– +1.6	0.1213
11	45	12.1 ± 1.9	11.5–12.6		67	10.9 ± 2.3	10.4–11.5		–1.2 ± 0.4	–2.0– –0.3	0.0065
12	54	14.1 ± 4.3	13–15.3		81	15.3 ± 1.9	14.8–15.7		+1.2 ± 0.5	0.1–2.2	0.0336
13	71	13.8 ± 2.1	13.3–14.3		81	13 ± 1.9	12.5–13.4		–0.8 ± 0.3	–1.5– –0.2	0.0114
14	53	22.8 ± 3.9	21.7–23.9		67	22.6 ± 3.2	21.8–23.3		–0.2 ± 0.6	–1.5– +1.0	0.7111
15	51	17.9 ± 2.2	17.3–18.5		85	16.9 ± 2.6	16.3–17.5		–1.0 ± 0.4	–1.9– –0.2	0.0181
16	50	14.6 ± 2.7	13.8–15.3		86	12.9 ± 2.5	12.3–13.4		–1.7 ± 0.5	–2.6– –0.7	0.0005
17	50	9.9 ± 2.2	9.3–10.5		72	11 ± 2	10.5–11.4		+1.0 ± 0.4	0.3–1.8	0.0075
18	46	12.7 ± 2.8	11.9–13.6		87	11.4 ± 2.3	11–11.9		–1.3 ± 0.5	–2.2– –0.4	0.0051

*p values are calculated using the unpaired t test. n, number.