In around 1825, he went to Nagasaki to study Dutch medicine and treated 清人's eye disease by performing an operation which was a case Philipp Franz von Siebold were not able to deal with; as a result he gained nationwide fame as an eye doctor.
文政8年（1825年）頃、長崎に至り、オランダ医術を学び、フィリップ・フランツ・フォン・シーボルトも治す事ができなかった清人の眼病を手術によって治療し、眼科医として全国的に名声を得る。