Table 1. Description of patients in groups 1 and 2.
| Patients data | Group 1 (XEN®) | Group 2 (Trabeculectomy) | P |
| Patients (n) | 17 | 17 | |
| Eyes (n) | 17 | 17 | |
| Age | >0.05 | ||
| Mean | 69.9 | 67.3 | |
| Median | 74 | 74 | |
| Min | 47 | 44 | |
| Max | 93 | 86 | |
| SD | 12.4 | 15.4 | |
| Gender, n (%) | |||
| M | 10 (58.8) | 13 (76.4) | |
| F | 7 (41.2) | 4 (23.6) | |
| Topical anti-hypertensive drugs required, n (%) | |||
| 0 | 9 (52.9) | 7 (41.2) | |
| 1 | 2 (11.8) | 3 (17.6) | |
| 2 | 4 (23.5) | 1 (5.9) | |
| 3 | 2 (11.8) | 5 (29.4) | |
| 4 | 0 (0) | 1 (5.9) | |
| Post-operative follow-up time (mo) | >0.05 | ||
| Mean | 15.5 | 15.4 | |
| Median | 12 | 15 | |
| Min | 8 | 8 | |
| Max | 24 | 24 | |
| SD | 6.5 | 5.2 | |
| BCVA (logMAR) | >0.05 | ||
| Mean | 0.2 | 0.2 | |
| Median | 0.1 | 0.2 | |
| Min | 0 | 0 | |
| Max | 1.3 | 1.3 | |
| SD | 0.4 | 0.2 | |
| IOP (mm Hg) | >0.05 | ||
| Mean | 14.8 | 13.9 | |
| Median | 14 | 14 | |
| Min | 6 | 10 | |
| Max | 30 | 30 | |
| SD | 6.2 | 4.7 | |
Min: Minimum; Max: Maximum; SD: Standard deviation; BCVA: Best-corrected visual acuity; IOP: Intraocular pressure.