Stanford University - Mary M. and Sash A. Spencer Center for Vision Research, Stanford University - Mary M. and Sash A. Spencer Center for Vision Research, Stanford University - Mary M. and Sash A. Spencer Center for Vision Research, Stanford University - Mary M. and Sash A. Spencer Center for Vision Research, Stanford University - Mary M. and Sash A. Spencer Center for Vision Research, University of California, San Diego (UCSD) - Department of Cellular and Molecular Medicine, Stanford University - Department of Neurosurgery, Max Planck Institute for Heart and Lung Research, City College of New York - Department of Biology, Stanford University - Department of Neurosurgery, Stanford University - Department of Neurosurgery and Stanford University - Department of Opthalmology