Fig. 3From: Age- and frequency-dependent changes in dynamic contrast perception in visual snow syndromeDependence of the contrast threshold in controls (A) and VSS patients (B) on age. Solid: the 95% confidence ellipse and its great semi axis. r: Pearson’s coefficient of correlation between age and contrast threshold. Significant correlation was observed in patients (p < 0.001) but not in controlsBack to article page