Table 2.
Frequency and timepoint of postoperative complications found following Xen surgery (n=259)
| Complications | Day 1 | Week 1 | Month 1 | Beyond Month 1 |
|---|---|---|---|---|
|
| ||||
| Numerical hypotony (IOP <6 mmHg) | 78 | 9 | 1 | 2 |
| IOP spike (≥30 mmHg) | 0 | 6 | 10 | 17 |
| Transient implant occlusion, eg, iris, blood (causing IOP ≥20 mmHg) | 2 | 1 | 6 | 1 |
| ≥2 Snellen lines vision loss lasting >1 month | 0 | 0 | 0 | 9 |
| Large dysesthetic bleb | 0 | 1 | 2 | 3 |
| Implant exposure | 0 | 0 | 3 | 3 |
| Hypotonous maculopathy | 3 | 1 | 1 | 0 |
| Choroidal effusion lasting >1 month | 0 | 0 | 0 | 4 |
| Endophthalmitis | 0 | 0 | 0 | 1 |
| Central retinal vein occlusion | 0 | 0 | 0 | 1 |
Abbreviation: IOP, intraocular pressure.