Best corrected visual acuity (VA) in diabetic patients with different stages of diabetic retinopathy (DR) and controls, before and after surgery. All values of VA are given as median (range)
| Group | Visual acuity | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Preoperative | Postoperative | ||||||||||||
| 1 week | 3 months | 1 year | |||||||||||
| Control | 0.4 (0.01–0.8) | 10 (0.8–1.0) | 1.0 (0.5–1.0) | 1.0 (0.5–1.0) | |||||||||
| No DR or mild-moderate DR | 0.3 (0.13–0.65) | 0.8 (0.3–1.0) | 1.0 (0.3–1.0) | 1.0 (0.1–1.0) | |||||||||
| Advanced DR | 0.16 (0.01–0.6) | 0.5 (0.1–0.8) | 0.5 (0.1–1.0) | 0.5 (0.1–1.0) | |||||||||
↵Significantly different from control group and group with no DR or mild to moderate DR (Kruskal–Wallis ANOVA and multiple comparisons, p<0.05).