1 From the Drexel University College of Medicine, Philadelphia, Pennsylvania (Reilly, Tipton, Berkenstock); Wilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland; Department of Ophthalmology, Minneapolis Veterans Affairs Health Care System, Minneapolis, Minnesota (Armbrust); Department of Ophthalmology and Visual Neurosciences, University of Minnesota, Minneapolis, Minnesota (Armbrust); Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin (Kopplin).