1. Department of Ophthalmology, Kitasato University Hospital, Kanagawa, Japan
2. Department of Rehabilitation, Orthoptics and Visual Science Course, School of Allied Health Science, Kitasato University, Kanagawa, Japan
3. Department of Ophthalmology, Ebina Medical Plaza, Kanagawa, Japan
4. Sato Eye and Internal Medicine Clinic, Kumamoto, Japan.