Baseline characteristics
| All | Male | Female | |
| Age | |||
| Mean (years) | 72.7 | 72.5 | 72.9 |
| SD | 9.5 | 8.3 | 10.2 |
| n | 93 | 35 | 58 |
| Comorbidity | |||
| No | 72 | 25 | 47 |
| Yes | 21 | 10 | 11 |
| Diabetes | |||
| No | 61 | 23 | 38 |
| Yes | 32 | 12 | 20 |
| Retinal grade | |||
| R0 | 23 | 11 | 12 |
| R1 | 7 | 1 | 6 |
| R2 | 0 | 0 | 0 |
| R3 | 2 | 0 | 2 |
| M0 | 27 | 12 | 15 |
| M1 | 5 | 0 | 5 |
The table reports the baseline characteristics of the population studied grouped according to gender, ocular comorbidities, diabetes status and retinopathy grading.
R0 is no retinopathy, R1 is background retinopathy, R2 preproliferative retinopathy and R3 is proliferative retinopathy. M0 is no maculopathy and M1 maculopathy.