Table 1 Demographic and clinical data of 44 patients (45 eyes) who underwent glaucoma drainage device surgery

Male/female (%)

Age (years)

71.0 ± 10.8 (range 34–92)

Preop.duration of glaucoma (months)

116.2 ± 105.8 (range 1–396)

Trabeculectomies before surgery (n)

0.9 ± 0.9 (range 0–4)

Right/left eye (%)

55.6/44.4

Mean intraocular pressure (mmHg)

Preoperative

30.1 ± 8.1

Postop. day 1

10.9 ± 5.4*

Postop. week 1

10.5 ± 5.2*

Postop. month 1

12.7 ± 5.8*

Postop. month 3

14.1 ± 6.4*

Postop. month 6

13.3 ± 5.3*

Postop. year 1

13.8 ± 4.9*

Postop. year 2

12.8 ± 3.6*

Postop. final visit

14.5 ± 4.9*