1. Department of Ophthalmology, University of Tokyo, Tokyo, Japan 2Asahi Chuo Hospital, Chiba, Japan
2. Department of Ophthalmology, University of Tokyo, Tokyo, Japan
3. Department of Ophthalmology, University of Tokyo, Tokyo, Japan 3Saitama Sekijuji Hospital, Saitama, Japan
4. Department of Diabetes and Metabolism, University of Tokyo, Tokyo, Japan
5. Department of Ophthalmology, University of Tokyo, Tokyo, Japan 5Tokyo Metropolitan Geriatric Hospital, Itabashi, Tokyo, Japan