1. From the Department of Ophthalmology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea; and the
2. From the Department of Ophthalmology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea; and the 2Department of Ophthalmology, Konyang University, Kim's Eye Hospital, Myung-Gok Eye Research Institute, Seoul, Korea.