1. Department of Biomedical Engineering, University of Iowa, Iowa City, Iowa, United States
2. Stephen A. Wynn Institute for Vision Research, University of Iowa, Iowa City, Iowa, United States 3Department of Ophthalmology and Visual Sciences, University of Iowa, Iowa City, Iowa, United States
3. Department of Electrical and Computer Engineering, University of Iowa, Iowa City, Iowa, United States
4. Department of Biostatistics, College of Public Health, University of Iowa, Iowa City, Iowa, United States
5. Department of Ophthalmology and Visual Sciences, University of Iowa, Iowa City, Iowa, United States
6. Department of Electrical and Computer Engineering, University of Iowa, Iowa City, Iowa, United States 6Iowa City VA Health Care System, Iowa City, Iowa, United States
7. Department of Ophthalmology and Visual Sciences, University of Iowa, Iowa City, Iowa, United States 4Department of Electrical and Computer Engineering, University of Iowa, Iowa City, Iowa, United States
8. Department of Biomedical Engineering, University of Iowa, Iowa City, Iowa, United States 2Stephen A. Wynn Institute for Vision Research, University of Iowa, Iowa City, Iowa, United States 3Department of Ophthalmology and Visual Sciences, University of Iowa, Iowa City, Iowa, United States 4Department of Electrical and Computer Engineering, University of Iowa, Iowa City, Iowa, United States 6Iowa City VA Health Care System, Iowa City, Iowa, United States