1. Department of Ophthalmology and Visual Sciences, University of Iowa Hospitals and Clinics, Iowa City, Iowa; the 2Department of Veterans Affairs, Iowa City VA Medical Center, Iowa City, Iowa; and the
2. Departments of Electrical and Computer Engineering and
3. Department of Ophthalmology and Visual Sciences, University of Iowa Hospitals and Clinics, Iowa City, Iowa; the 2Department of Veterans Affairs, Iowa City VA Medical Center, Iowa City, Iowa; and the 3Departments of Electrical and Computer Engineering and
4. Department of Ophthalmology and Visual Sciences, University of Iowa Hospitals and Clinics, Iowa City, Iowa; the