Baseline Visual Function Questionnaire scores, mean (SD)
| Subscale | ≥80% adherence | <80% adherence | Total | Standardised difference |
| Composite | 75.91 (19.12) | 70.66 (20.50) | 74.32 (19.57) | 0.27 |
| Peripheral vision | 71.36 (26.10) | 65.63 (25.34) | 69.62 (25.84) | 0.22 |
| General vision | 68.73 (17.96) | 64.17 (19.54) | 67.34 (18.45) | 0.24 |
| Colour vision | 83.65 (23.68) | 81.52 (28.42) | 83.00 (25.05) | 0.08 |
| Ocular pain | 78.86 (22.81) | 72.40 (22.11) | 76.90 (22.65) | 0.29 |
| Near activities | 73.41 (22.57) | 64.06 (25.29) | 70.57 (23.67) | 0.39 |
| Distance activities | 78.11 (24.78) | 72.74 (21.03) | 76.48 (23.70) | 0.23 |
| Social functioning | 86.59 (19.22) | 80.21 (26.04) | 84.65 (21.55) | 0.28 |
| Mental health | 74.09 (27.17) | 66.93 (30.48) | 71.91 (28.22) | 0.25 |
| Role difficulties | 72.95 (27.93) | 69.79 (31.48) | 71.99 (28.88) | 0.11 |
| Dependency | 83.94 (23.34) | 80.90 (27.42) | 83.02 (24.51) | 0.12 |
| Driving | 64.71 (34.43) | 62.50 (31.93) | 64.08 (33.54) | 0.07 |
| General health | 46.82 (21.55) | 36.46 (26.56) | 43.67 (23.50) | 0.43 |