1. From the Pediatric Ophthalmology Division, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia;
2. From the Pediatric Ophthalmology Division, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia; 3Pediatric Ophthalmology Section, Calderdale Royal Infirmary, Halifax, United Kingdom;
3. Pediatric Ophthalmology Section, Calderdale Royal Infirmary, Halifax, United Kingdom;
4. Genetics Division, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia;
5. Departments of Neurology and
6. Departments of Neurology and 6Ophthalmology and the 7Manton Center for Orphan Disease Research, Children's Hospital Boston, Boston, Massachusetts; Departments of 8Neurology and 9Ophthalmology, Harvard Medical School, Boston, Massachusetts; 10Howard Hughes
7. Division of Neurology, Cooper University Hospital, Camden, New Jersey; and 12Department of Ophthalmology, King Saud University, Riyadh, Saudi Arabia.