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Table 2 Intraocular pressure during the follow-up period

From: Comparison of surgical outcomes between initial trabeculectomy and Ex-PRESS in terms of achieving an intraocular pressure below 15 and 18 mmHg: a retrospective comparative study

IOP (mmHg)

N

Trabeculectomy

N

Ex-PRESS

value

Presurgical

64

22.6 ± 6.2

54

21.8 ± 6.0

0.507

1 W

64

11.9 ± 3.5

54

12.6 ± 6.0

0.447

2 W

64

11.7 ± 3.4

54

12.2 ± 2.9

0.428

1 M

64

12.2 ± 2.7

54

13.0 ± 3.6

0.225

2 M

64

12.9 ± 2.9

54

12.4 ± 2.6

0.363

3 M

64

12.7 ± 2.4

54

12.9 ± 4.3

0.732

6 M

63

12.6 ± 2.6

54

14.0 ± 4.4

0.060

9 M

62

13.1 ± 2.4

53

13.0 ± 3.1

0.947

12 M

64

12.7 ± 2.3

52

12.9 ± 2.8

0.678

15 M

63

13.0 ± 2.7

52

12.8 ± 3.1

0.667

18 M

63

13.3 ± 2.6

51

12.6 ± 2.8

0.260

21 M

62

13.4 ± 1.9

49

13.1 ± 3.4

0.570

24 M

62

13.2 ± 2.3

48

13.6 ± 2.8

0.444

27 M

57

13,3 ± 2.6

48

14.0 ± 4.4

0.349

30 M

36

14.1 ± 2.5

45

13.6 ± 2.9

0.403

33 M

24

14.2 ± 2.8

37

12.7 ± 2.2

0.028

36 M

9

13.1 ± 3.3

19

13.1 ± 2.6

0.971

Final visit

64

13.1 ± 2.4

54

12.7 ± 2.5

0.317

  1. All values were calculated using Welch's t-test. W = week; M = month