1. Department of Ophthalmology, University of Cambridge, Cambridge, United Kingdom
2. Department of Ophthalmology and Visual Sciences, University of Michigan Kellogg Eye Center, Ann Arbor, Michigan
3. Center for Space Medicine, Baylor College of Medicine, Houston, Texas
4. Department of Ophthalmology, Blanton Eye Institute, Houston Methodist Hospital, Houston, Texas
5. Department of Ophthalmology, The Houston Methodist Research Institute, Houston Methodist Hospital, Houston, Texas
6. Department of Ophthalmology, Neurology, and Neurosurgery, Weill Cornell Medicine, New York
7. Department of Ophthalmology, University of Texas Medical Branch, Galveston, Texas