Later he won a fame as an eye doctor, however, as it is comprehensible from the fact that he copied out "the drawing of an operation for breast cancer" performed by Seishu HANAOKA, he studied all fields of medical science under the policy "kindle a light for all patients."
のちに眼科医として名声をはせたが、華岡青洲の「乳がん手術図」を模写している事からも分かるように、「病人に普く一灯をともす（普一）」の思想の下、あらゆる分野の医術を学んでいた事が分かる。