1. Department of Ophthalmology, Boston Children's Hospital, Boston, MA, USA
2. Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
3. F.M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
4. Department of Neurology, Boston Children's Hospital, Boston, MA, USA
5. Howard Hughes Medical Institute, Chevy Chase, MD, USA
6. Department of Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
7. Division of Pediatric Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
8. Department of Neurology, Harvard Medical School, Boston, MA, USA