Fig. 5
Graphical representation of the distribution of the regression line slopes for the PR VEP and MO VEP parameters. The directive describes the estimate of how the corresponding parameter changes when the equivalent defocus is increased by 1 D. The left plot shows the slopes for the interpeak amplitude, and the right plot shows the slopes for the peak time. Box plots indicate the median, upper and lower quartiles, dashed lines indicate the 25th and 75th percentiles, and the + sign indicates outliers. Above or below every boxplot is indicated if the slope was significantly different from zero (*p < 0.05, ***p < 0.001, n.s. indicates not significant).
