1 Departments of Clinical Neurological Sciences (CMFL, SMM, JAF) and Ophthalmology (JAF), Western University, London, Canada; Departments of Medicine (Neurology) and Ophthalmology (MWDT), Dalhousie University, Halifax, Canada; Division of Neurology (LBL), Queen's University, Kingston, Canada; and Diagnostic Imaging, Biomedical Imaging and Psychology (SMM), Schulich School of Medicine and Dentistry, Western University, London, Canada.