Book (Practical) Living One minute at a time! Nakagawa-style "Bead Rope" for 3 d Eyesight Training for Nearsightedness, Presbyopia, Farsightedness and Smartphone Eyes!
※Please note that product information is not in full comprehensive meaning because of the machine translation.
Japanese title: 単行本(実用) 家政学・生活科学 1回1分! 中川式「ビーズロープ」で3次元視力トレーニング 近視・老眼・遠視・スマホ目に!! / 中川和宏