1 Western University of Pacific Health Sciences (KEM), Lebanon, Oregon; Department of Neurology (THM), University of Leicester, Kettering General Hospital, Kettering, United Kingdom; Medical Scientist Training Program (VSJ), Baylor College of Medicine, Houston, Texas; Department of Ophthalmology and Neurology (PAD, NAL, WO, AGL), Houston Methodist Hospital, Houston, Texas; Department of Neuro-ophthalmology (NJ), Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom; Department of Neuro-ophthalmology (NJ), National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, London, United Kingdom; Institute of Ophthalmology (NJ), University College London, London, United Kingdom; Departments of Ophthalmology, Neurology, and Neurosurgery (WO, AGL), Weill Cornell Medicine, New York, New York; Department of Ophthalmology (AGL), University of Texas Medical Branch, Galveston, Texas; University of Texas MD Anderson Cancer Center (AGL), Houston, Texas; Texas A and M College of Medicine (AGL), Bryan, Texas; and Department of Ophthalmology (AGL), The University of Iowa Hospitals and Clinics, Iowa City, Iowa.