Patient characteristics
| *Mean (SD) | |
| †0 = no diabetic retinopathy, 1 = background retinopathy 2 = non-proliferative retinopathy, 3 = proliferative retinopathy. | |
| Age (years) | 63.64 (10.33)* |
| Sex (M/F) | 17/33 |
| Duration of diabetes (year) | 10.85 (9.08)* |
| Therapy (hypogl/insul) | 35/15 |
| Smoke (yes/no) | 7/43 |
| HBA1C (%) | 8.56 (1.58)* |
| Neuropathy (no/yes) | 26/24 |
| Retinopathy (0/1/2/3)† | 14/18/12/6 |









