Ibn Abī Uṣaybi'a refers to cataract surgeries in the biography of Sadīd al-Dīn ibn Raqīqa (d. 1238), a court physician and an expert in the "art of ophthalmology and surgery, and in treating diseases of the eye, performing many surgical operations." #histmed (1)
Sadīd al-Dīn removed cataracts from the eyes of patients, using an instrument that "was hollow and curved, so that during the operation, the fluid could be more efficiently extracted, with the result that the treatment was more effective."
Emilie Savage-Smith discusses eye surgeries in an article from 2000, "The Practice of Surgery in Islamic Lands" (pp. 316-319). She finds some of the information concerning cataract surgeries to be problematic, including the usage of the hollow instrument for this purpose.
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T-S 16.287: This letter was published by E. Ashtor, History of the Jews in Egypt and Syria under the Mamluks, 3:101-105 (Heb.); the date was corrected by S.D. Goitein to 1208 C.E., i.e. preceding the Mamluk period. cudl.lib.cam.ac.uk/view/MS-TS-000… #geniza#histmed
Line 24: "Now (it pains me to say) he is like a stone [or: he is a stone of the grave?]": This phrase, אבן דומה, is understood by Goitein as a reference to biblical יורדי דומה, "dead people" (Ps. 115:17).