Department of Ophthalmology, Faculty of Medical Sciences, University of Fukui, Yoshida, Fukui, Japan. Department of Ophthalmology, Tokyo Medical University Hachioji Medical Center, Hachioji, Tokyo, Japan. Department of Ophthalmology and Visual Neuroscience, Institute of Health Biosciences, University of Tokushima Graduate School, Tokushima, Japan. Department of Ophthalmology, National Defense Medical College, Tokorozawa, Japan. Department of Ophthalmology, Mie University Graduate School of Medicine, Tsu, Japan. Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan. Department of Ophthalmology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan.