1. From the School of Optometry, Indiana University, Bloomington, Indiana;
2. Department of Optometry and Visual Sciences, Buskerud University College, Kongsberg, Norway;
3. Department of Biological Sciences, State University of New York, State College of Optometry, New York, New York; 4Max Planck Institute for Biophysical Chemistry, Göttingen, Germany; and
4. Department of Surgery, Sections of Surgical Research and Ophthalmology and Visual Science, University of Chicago, Chicago, Illinois.