1. Department of Ophthalmology and Visual Sciences, University of Iowa, Iowa City, Iowa, United States 2Department of Ophthalmology, Mayo Clinic, Rochester, Minnesota, United States
2. Department of Ophthalmology and Visual Sciences, University of Iowa, Iowa City, Iowa, United States 3Department of Neurology, University of Iowa, Iowa City, Iowa, United States 4Department of Veterans Affairs, Iowa City, Iowa, United States
3. Department of Ophthalmology and Visual Sciences, University of Iowa, Iowa City, Iowa, United States 4Department of Veterans Affairs, Iowa City, Iowa, United States
4. Department of Veterans Affairs, Iowa City, Iowa, United States 5Department of Electrical and Computer Engineering, University of Iowa, Iowa City, Iowa, United States