| Study |
Eyes/Patients |
Maximum follow-up duration (years) |
Complete/Qualified success |
| Robinson et al [30] |
179 / 129 |
10 |
67% / 86% |
| Ehmrooth et al [31] |
138 / 138 |
4 |
40% / 52% |
| Diestelhorst et al [32] |
700 / 547 |
10 |
35% / 44% |
| Molteno et al [33] |
289 / 193 |
15 |
----- / 85% |
| Bevin et al [34] |
841 / 607 |
20 |
----- / 79% |
| Landers et al [35] |
330 / 234 |
20 |
60% / 90% |
| Jampel et al [36] |
797 / 634 |
9 |
53% / 72% |
| Present study (≤21mmHg) |
636 / 507 |
13 |
71% / 97% |
|
