1. From the Departments of Ophthalmology and Vision Science and
2. Department of Ophthalmology, University of Iowa Hospitals and Clinics, Iowa City, Iowa; and
3. Discoveries in Sight, Devers Eye Institute, Portland, Oregon.
4. From the Departments of Ophthalmology and Vision Science and4Neurology and Neurological Surgery, University of California Davis School of Medicine, Sacramento, California; the