José-Alain Sahel is the chair of the Department of Ophthalmology at the University of Pittsburgh School of Medicine, director of the UPMC Eye Center, and the Eye and Ear Foundation Chair of Ophthalmology. Dr. Sahel is known worldwide for his expertise in vision restoration techniques. He has developed several interventions— including stem cell implantation, gene therapy, innovative pharmacologic approaches, and the artificial retina—for retinitis pigmentosa, age-related macular degeneration, vascular eye disease, and other vision impairments that currently are untreatable. Over the past decade he has led pioneering efforts in optogenetic vision restoration, a technique in which cells in the retina are genetically modified to express light sensitive proteins. This therapeutic technique has the potential to help patients who are blind or visually impaired as a result of a genetic defect. Sahel, who was born in Algeria, studied medicine at Strasbourg University and in Lariboisière, Saint-Louis. He received his medical degree with a Medal of the Faculty of Paris and obtained his specialty certification in ophthalmology. He completed a residency in neurology and neurosurgery at the Louis Pasteur University Hospital in Strasbourg. He also was a research fellow at the Massachusetts Eye and Ear Infirmary and a visiting scholar in the Department of Molecular and Cellular Biology at Harvard University. Dr. Sahel is the founder and director of the Vision Institute in Paris and currently a professor at the Sorbonne’s medical school Université Pierre-et-Marie-Curie.