Characteristics of the subjects
| Variable | Mean (SD) [range] |
| Age (years) | 62.9 (12.2) [31–80] |
| Systolic BP (mm Hg) | 133.2 (14.0) [104–156] |
| Diastolic BP (mm Hg) | 78.9 (8.3) [62–94] |
| IOP (mm Hg) | 14.0 (3.3) [9–20] |
| Refractive error (dioptres) | 0.2 (1.7) [−5.0–4.6] |
| Axial length (mm) | 23.0 (1.0) [20.6–26.6] |