[1] Yokohama City Univ, Dept Ophthalmol & Microtechnol, 4-57 Urafune,Minami Ku, Yokohama, Kanagawa 2320024, Japan
[2] Addenbrookes Hosp, Dept Ophthalmol, Cambridge, England
[3] Seirei Hamamatsu Gen Hosp, Dept Ophthalmol, Shizuoka, Japan
[4] Seirei Christopher Univ, Shizuoka, Japan