1 Department of Ophthalmology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark Department of Ophthalmology, Western University, London, Canada Departments of Clinical Neurosciences and Surgery, University of Calgary, Calgary, Canada John A. Moran Eye Centre, University of Utah, Salt Lake City, Utah Department of Ophthalmology, Western University, London, Canada Department of Clinical Neurological Sciences, Western University, London, Canada Save Sight Institute, University of Sydney, Sydney, Australia John A. Moran Eye Centre, University of Utah, Salt Lake City, Utah Sydney Eye Hospital, Sydney, Australia Moorfields Eye Hospital, London, United Kingdom Neuro-ophthalmology Expertise Centre, VUmc, Amsterdam, Netherlands Department of Ophthalmology, State University of New York at Stony Brook, Stony Brook, New York John A. Moran Eye Centre, University of Utah, Salt Lake City, Utah Department of Ophthalmology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark Moorfields Eye Hospital, London, United Kingdom Neuro-ophthalmology Expertise Centre, VUmc, Amsterdam, Netherlands Department of Ophthalmology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.