A, Plot of CD19+ B-cell frequency in the CSF and corresponding common ganglion cell and inner plexiform layer (GCIPL) volume or inner nuclear layer (INL) volume in 65 patients (103 eyes) with relapsing-remitting MS. B, Plot of CSF/serum IgG and CSF/serum IgA indices and corresponding GCIPL volume and peripapillary retinal nerve fiber layer (RNFL) thickness in 72 patients (113 eyes) with relapsing-remitting MS. C, Plot of CD56bright natural killer (NK) cell frequency in the CSF and corresponding INL volume in 65 patients (103 eyes) with relapsing-remitting MS. Kendall-rank correlation analysis corrected for age, sex, Expanded Disability Status Scale (EDSS) score at baseline, disease duration, and treatment group. Diagonal line indicates median regression slope.