Fig. 1

The correlation analysis between CCFA and retinal vascular structural parameters. Spearman correlation analysis between CCFA and SCP and DCP as well as retinal thickness parameters in the macular region. Reduced CCFA was significantly positively correlated with SCP (whole) (P < 0.001) and DCP (whole) (P < 0.001) (a,d). Similarly, CCFA showed significant positive correlations with SCP (parafovea) (P < 0.001) and DCP (parafovea) (P < 0.001) (c,f). No significant correlation was found between CCFA and SCP (fovea) (P = 0.382) (b), whereas a significant positive correlation was observed with DCP (fovea) (P = 0.005) (e). Neither inner retinal thickness (P = 0.823) nor outer retinal thickness (P = 0.208) showed significant correlations with CCFA (g,h).