1. Department of Ophthalmology, Jichi Medical University, Tochigi, Japan
2. Department of Ophthalmology, Japan Community Healthcare Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
3. Department of Ophthalmology and Micro-Technology, Yokohama City University Medical Center, Yokohama, Japan
4. The Ophthalmology & Visual Sciences Academic Clinical Program, Duke-NUS Medical School, National University of Singapore, Singapore