1. From the Department of Neurology (P.V.), Hospital Hospital del Mar–Pomepu Fabra University, Barcelona; Neurology Service and Laboratory of Advanced Imaging in Neuroimmunological Diseases (E.S., S.A.-A., E.M.-H., F.V., E.L.-S., A.C., E.H.M.-L., Y.B., S.L.), Hospital Clinic of Barcelona; and Ophthalmology Service (S.A.-A., A.C.-C., M.D.-B., R.A.B., S.L., B.F.S.D.), Hospital Clinic of Barcelona, Spain.