1. Department of Ophthalmology, Toho University Ohashi Medical Center, Tokyo, Japan
2. Tajimi Iwase Eye Clinic, Tajimi, Gifu, Japan
3. Department of Ophthalmology, Kitasato University School of Medicine, Kanagawa, Japan
4. Department of Ophthalmology, School of Medicine, Toho University, Tokyo, Japan
5. Department of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan
6. Department of Ophthalmology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
7. Fukui-ken Saiseikai Hospital, Fukui, Japan
8. Kanto Central Hospital of the Mutual Aid Association of Public School Teachers, Tokyo, Japan