1. From the Schepens Eye Research Institute and Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts; and the2Department of Neurology, Ophthalmology, and Genetics, University of Genoa, Genoa, Italy.
2. From the Schepens Eye Research Institute and Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts; and the