1. From the School of Interactive Computing, Georgia Institute of Technology, Atlanta, Georgia;
2. the UPMC Eye Center, Eye and Ear Institute, Ophthalmology and Visual Science Research Center, Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; the 3Department of Bioengineering, Swanson School of Engineer
3. the Intel Science and Technology Center, Carnegie Mellon University, Pittsburgh, Pennsylvania;
4. the UPMC Eye Center, Eye and Ear Institute, Ophthalmology and Visual Science Research Center, Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania;
5. the New England Eye Center, Tufts Medical Center, Tufts University School of Medicine, Boston, Massachusetts; and
6. the Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts.