Honjō Fuichi 本荘普一 (also written 本庄俊篤 Honjō Toshiatsu; gō 普一 Pǔyī; fl. late Edo, c. 1820s–1830s), Japanese kanpō 漢方 physician specialising in ophthalmology. The known biographical fragments come almost entirely from internal evidence in his own KR3em005 Yǎnkē jǐnnáng 眼科錦囊: as a young man (ruòguān 弱冠, i.e. early twenties) he travelled to Edo (江都) to study under one Suìlán xiānshēng 翠蘭先生, suffered a severe inflammatory eye disease that nearly blinded him, was rescued by the obscure Edo physician Xiǎo-chū-zi 小出子 (who treated him with controlled emesis, bloodletting at the jiānjǐng / chǐzé points, and gégēn cháihú 葛根柴胡 decoctions), and thereafter committed himself to reforming the Japanese ophthalmological tradition. He travelled to Shinshū 信州, Owari 尾州, Tsukushi 筑紫, and Nagasaki (崎陽), studying with more than a hundred different physicians; in mid-life he was based in Kyōto. His students included 勝澤圭元璋 Shōzawa Kei Genshō (a medical officer of Echizen domain) and 梶井元鴻 Kajii Genkō (of Nagasaki), both of whom contributed postfaces to the zoku-pen (續編) of his book; the zoku-pen manuscript was completed in late autumn 1835 (Tenpō 6) and the work first printed 1837 (Tenpō 8). The earlier zen-pen was published 1831 (Tenpō 2). Honjō’s signature contribution is the explicit and programmatic rejection of wǔxíng bāguà correlative ophthalmology in favour of empirical observation and case-based reasoning. The user-supplied dates 1738–1791 are inconsistent with the work’s internal Tenpō-era dating and are likely an attribution error from earlier reference works; the conventional bibliography (Fujikawa Yū, Kokusho sōmokuroku) places his floruit firmly in the Bunsei–Tenpō period.