Characteristics of the treated eyes: related to the visual outcome, comparing the visual acuity before surgery and at the last visit
| Visual acuity change | Improved/no change | Worsened* | All eyes |
|---|---|---|---|
| *Worsened visual acuity by more than 2 snellen lines. | |||
| †Statistically different between two groups (Mann-Whitney test, p=0.045). | |||
| Age (years) (SD) | 49 (14) | 51 (14) | 50 (14) |
| Sex (male/female) | 17/11 | 7/5 | 24/16 |
| IOP (mm Hg) | |||
| Preoperative | 41.9 (16.3) | 44.0 (10.4) | 42.5 (14.6) |
| At last visit | 18.2 (10.9) | 15.3 (8.5) | 17.3 (10.2) |
| No of antiglaucoma medications | |||
| Preoperative | 2.1 (0.7) | 2.3 (0.5) | 2.2 (0.6) |
| At last visit | 0.6 (0.8) | 0.3 (0.7) | 0.5 (0.8) |
| No of previous surgery† | 0.9 (1.3) | 2.3 (2.1) | 1.3 (1.6) |
| Mitomycin C (used/not used) | 8/20 | 5/7 | 13/27 |
| Number of subjects (%) | 28 (70) | 12 (30) | 40 (100) |