Fu Yun-ke, styled Renyu, was a native of Jiangning Prefecture, Jiangsu Province during the Ming Dynasty. Coming from a family of physicians, he inherited the family's medical knowledge from a young age, particularly excelling in ophthalmology. He practiced medicine for over thirty years, gaining deep insights into medical theory. He led a simple life, indifferent to desires, content with plain clothes and simple meals. With eighteen years of clinical experience, he also visited renowned physicians, extensively collected rare medical books and secret formulas, and compiled the six-volume Shenshi Yaohan (also known as the Complete Compendium of Ophthalmology, as recorded in the Chinese Medical Bibliography). At the time, his son Fu Guodong and son-in-law Zhang Wenkai were both serving in the Nanjing Taiyiyuan (Imperial Medical Bureau), assisting him in editing and supplementing the work. The book was completed in the 17th year of the Chongzhen era of the Qing Dynasty (1644). Lu Bin of the Taiyiyuan wrote a preface for it before it was published. The first two volumes of the book provide a general discussion on the relationship between the eyes and the zang-fu organs, as well as various causes of eye diseases. The following sections cover 108 syndromes, detailing treatment methods and prescriptions. The four volumes are prefaced with medical cases, illustrations, and mnemonic verses, making it easy to understand the causes and symptoms upon opening the book. It is an unprecedented masterpiece in the field of ophthalmology (as recorded in the Chinese Medical Bibliography).