Summary of the data obtained from the control group and from diabetic patients with different levels of retinopathy. Data are presented as mean (SD)
| No retinopathy | Background retinopathy | Preproliferative retinopathy | Proliferative retinopathy | Maculopathy | |
|---|---|---|---|---|---|
| BCVA = best corrected visual acuity; TCT = tritan contrast threshold. | |||||
| No | 383 | 110 | 3 | 2 | 12 |
| TCT | 42.5 (6.3) | 41.7 (7.1) | 29.6 (8.5) | 21.7 (3.3) | 24.0 (7.2) |
| BCVA (log) | 0.06 (0.09) | 0.07 (0.09) | 0.06 (0.10) | 0.09 (0.13) | 0.11 (0.11) |
| Age (years) | 61.4 (13.9) | 59.0 (13.9) | 61.7 (13.1) | 45 (18.4) | 62.8 (8.8) |