Sean Gratton1, Matthew Cossack2. 1. Sean M Gratton, MD, MSMA member since 2001, is Assistant Professor of Neurology and Ophthalmology, at the University of Missouri - Kansas City. 2. Matthew Cossack, MD, was a Senior Resident in Ophthalmology at UMKC School of Medicine when the study was done. He is now in private practice at Essentia Health, Duluth, Minnesota.