Fig. 4

Box plots comparing mCNFL among the study groups. (a) Box plot comparing healthy controls vs. all Parkinson’s disease (PD) patients as a single group, t-test P = 0.62. (b) Box plot comparing all study subgroups including PD patients with and without RLS, ANOVA P = 0.79. Data represents quantification based on the single largest mosaic per eye, differing slightly from prior analyses where in some cases average values from several mosaics per eye were used30.