[Pramāṇa](https://indike.org/pramana/) › [Foreign](https://indike.org/pramana/inf) › [China](https://indike.org/pramana/inf.cn) › [Tang](https://indike.org/pramana/inf.cn.tang) › 外臺秘要 # 外臺秘要 Secret Essentials of the Outer Tower Medical compendium; fascicle 21 opens with the 'Treatise on the eye from the Indian scriptures' (天竺經論眼) transmitted by a Buddhist layman of Longshang, describing cataract couching with a golden needle as practised by Indian doctors. - **Language:** Classical Chinese - **Date:** 752 CE - **Author:** [王燾](https://indike.org/pramana/person/wang-tao) - **Text:** not yet digitised (catalogue entry) --- Source: [https://indike.org/pramana/inf.cn.tang.waitai-miyao](https://indike.org/pramana/inf.cn.tang.waitai-miyao) · Pramāṇa