1 Neurology Department (SPM, AFJ, AIM, SRB, JML), Coimbra University Hospital Centre, Coimbra, Portugal; Neurology Department (AFS-P), Hospital de Egas Moniz, Centro Hospitalar de Lisboa Ocidental, Lisboa, Portugal; Neurorradiology Unit (DJP), Imaging Department, Coimbra University Hospital Centre, Coimbra, Portugal; Ophthalmology Department (PLF), Coimbra University Hospital Centre, Coimbra, Portugal; and Faculty of Medicine (AIM, SRB, JML), Coimbra University, Coimbra, Portugal.