1. From the Massachusetts Eye and Ear Infirmary, The Schepens Eye Research Institute, and the2Wellman Laboratories of Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
2. Wellman Laboratories of Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
3. From the Massachusetts Eye and Ear Infirmary, The Schepens Eye Research Institute, and the