1. From the Departments of Ophthalmology,
2. the Neurobiology-Neurodegeneration and Repair Laboratory (N-NRL), National Eye Institute, National Institutes of Health, Bethesda, Maryland; and the Departments of 4Ophthalmology and 5Human Genetics, University of Michigan, Ann Arbor, Michigan.
3. From the Departments of Ophthalmology, 6Neuroscience, 7Molecular Biology and Genetics, and 8McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland;