Ayaka Kimura1, Ayaka Takeda1, Toyo Ikebukuro1,2, Junko Hori3. 1. Department of Ophthalmology, Nippon Medical School Tama-Nagayama Hospital, 1-7-1, Nagayama, Tama, Tokyo, 206-8512, Japan. 2. Department of Ophthalmology, Nippon Medical School Hospital, 1-1-5, Sendagi, Bunkyo, Tokyo, 113-8603, Japan. 3. Department of Ophthalmology, Nippon Medical School Tama-Nagayama Hospital, 1-7-1, Nagayama, Tama, Tokyo, 206-8512, Japan. jhori@nms.ac.jp.