Fig. 6

Estimated parameters by quantiles with 95% confidence intervals. a–e Quantile regression plots for covariates in the final model, including EIFL, VDparafoveal, BCVA, EZ and CFT. The x- and y-axis denote the quantile scale and the effect of a covariate on foveal sensitivity for a given quantile, respectively. The broken black line represented the estimated coefficients and the gray area represented 95% confidence interval of the corresponding parameters. EIFL, ectopic inner foveal layer; VD-parafoveal, vessel density–parafoveal; BCVA, best-corrected visual acuity; EZ, ellipsoid zone; CFT, central foveal thickness