Table 3 Intraocular pressure (IOP) and number of glaucoma medications.
| Follow up (months) | No | IOP | Number of medications | ||||
|---|---|---|---|---|---|---|---|
| Mean (SD) | (Range) | p Value* | Mean (SD) | (Range) | p Value* | ||
| Preoperative | 55 | 27.2 (7.9) | (10–50) | 1.6 (1.0) | (0–4) | ||
| Last follow up | 55 | 15.3 (6.6) | (0–33) | <0.001 | 0.6 (0.9) | (0–3) | <0.001 |
| Postoperative | |||||||
| 2–4 | 48 | 10.8 (6.7) | (2–30) | <0.001 | 1.1 (0.9) | (0–3) | 0.013 |
| 5–8 | 37 | 13.0 (6.5) | (4–30) | <0.001 | 0.7 (0.8) | (0–2) | <0.001 |
| 9–15 | 37 | 13.4 (5.5) | (4–30) | <0.001 | 0.6 (0.8) | (0–2) | <0.001 |
| 16–20 | 22 | 12.0 (4.8) | (5–27) | <0.001 | 0.5 (0.7) | (0–2) | <0.001 |
| 21–30 | 29 | 15.0 (5.8) | (7–31) | <0.001 | 0.6 (0.7) | (0–2) | <0.001 |
| 31–48 | 30 | 15.6 (7.2) | (0–38) | <0.001 | 0.4 (0.7) | (0–2) | <0.001 |
| >48 | 15 | 18.8 (7.7) | (10–33) | 0.004 | 0.9 (1.0) | (0–3) | 0.008 |
*Wilcoxon signed rank test, to test for statistically significant change of preoperative intraocular pressure and number of medications.