Table 3.
(A) Intraoperative and postoperative complications; (B) postoperative interventions; (C) revisions, reoperations and other surgeries
| (A) Complications | Intraoperative | Early postoperative (<3 months) | Late postoperative (>3 months) |
| Conjunctival buttonhole | 5 (4.8%) | ||
| Repeated passes to insert microshunt | 5 (4.8%) | ||
| Hypotony (IOP ≤5 mmHg) | 20 (19.2%) | 1 (1.0%) | |
| Numerical hypotony without sequelae | 8 (7.7%) | 0 | |
| Clinical hypotony with sequelae | 12 (11.5%) | 1 (1.0%) | |
| Hypotonous maculopathy | 1 (1.0%) | 0 | |
| Choroidal detachment | 11 (10.6%) | 0 | |
| Iridocorneal touch | 3 (2.9%) | 0 | |
| Hyphaema/microhyphaema | 6 (5.8%) | 0 | |
| Bleb leak | 6 (5.8%) | 0 | |
| Corneal oedema | 1 (1.0%) | 0 | |
| Corneal abrasion | 1 (1.0%) | 0 | |
| Microshunt exposure | 0 | 1 (1.0%) | |
| Cystoid macular oedema | 0 | 1 (1.0%) |
| (B) Interventions | No of eyes (%) |
| 5-Fluorouracil (5FU) injection | 35 (33.7) |
| Dexamethasone/ betamethasone injection | 24 (23.1) |
| Combined 5FU+steroid injection | 12 (11.5) |
| Tissue plasminogen activator injection | 1 (1.0) |
| Bevacizumab injection | 1 (1.0) |
| Any subconjunctival injection | 46 (44.2) |
| Repeated subconjunctival injections (>1 injection) | 25 (24.0) |
| Viscoelastic injection in anterior chamber | 6 (5.8) |
| Needling | 13 (12.5) |
| Repeated needling (>1 needling) | 7 (6.7) |
| (C) Reoperations | Early postoperative (<3 months) |
Late postoperative (>3 months) |
| Bleb revision for high IOP | 1 (1.0%) | 8 (7.7%) |
| Bleb revision for leak | 2 (1.9%) | 1 (1.0%) |
| Bleb revision for exposed tube | 0 | 1 (1.0%) |
| Glaucoma drainage device | 0 | 1 (1.0%) |
| iStent inject | 0 | 1 (1.0%) |
| Phacoemulsification | 0 | 2 (1.9%) |
IOP, intraocular pressure.