Success rates of the different groups
| Diagnosis | Success | Combined success rate % (n) | Failure‡ % (n) | ||||
|---|---|---|---|---|---|---|---|
| Complete* % (n) | Qualified† % (n) | ||||||
| Primary open angle | 53 (112) | 32 (66) | 85 (178) | 15 (31) | |||
| Pseudoexfoliation | 51 (60) | 38 (44) | 89 (104) | 11 (13) | |||
| Chronic angle closure | 53 (25) | 34 (16) | 87 (41) | 13 (6) | |||
| Pigmentary dispersion syndrome | 59 (20) | 23 (8) | 82 (28) | 18 (6) | |||
| Buphthalmus | 60 (15) | 0 (0) | 60 (15) | 40 (10) | |||
| Dysgenetic glaucoma | 52 (11) | 17 (5) | 83 (16) | 17 (5) | |||
| Uveitic glaucoma | 36 (5) | 14 (2) | 50 (7) | 50 (7) | |||
| Traumatic | 50 (5) | 20 (2) | 70 (7) | 30 (3) | |||
| Neovascular glaucoma | 0 (0) | 20 (1) | 20 (1) | 80 (4) | |||
| Repeat trabeculectomy | 31 (13) | 20 (8) | 51 (21) | 49 (20) | |||
Criteria used: *IOP <22 mm Hg and no medication; †IOP <22 mm Hg with medication; ‡IOP >21 mm Hg regardless of medication.