Figure 1

Forest plot of relationship between homocysteine level and diabetic retinopathy. (A) The concentration of Hcy was higher in DR groups than the control group (WMD, 2.55; 95% CI, 1.70 to3.40) (B) Diabetes mellitus (DM) patients with hyperhomocysteinemia were at a risk for DR [odds ratio (OR) = 1.93; 95% CI, 1.46-2.53].