The earliest mention of Salvino degli Armati as the inventor of eyeglasses occurred in 1684. Ferdinando Leopoldo del Migliore (1628-1696) of Florence published a book, Firenze citta' noblissima illustrata (Florence, Most Noble City, illustrated). In this book, del Migliore claimed to own a burial register of the Church of Santa Maria Maggiore, which had recently been renovated. This register supposedly recorded Armati's epitaph as follows:
Translation : Here lies Salvino, son of Armato degli Armati of Florence, inventor of eyeglasses. May God forgive his sins. A.D. 1317.
Del Migliore never produced this burial register, and it has never been found. Del Migliore claimed that D'Armati's tomb and its epitaph was obliterated during the church's restoration.
In 1920, the Italian scholar Isidoro del Lungo (1841-1927) pointed out (1) that nowhere else had a "Salvino degli Armati" been credited with being the inventor of eyeglasses, (2) that in the 14th century, the epitaph would have read "le peccata", not "la peccata", and most importantly, (3) that the term "inventor" did not exist in the Florentine vernacular during the 14th century. Del Lungo also found that a "Salvino degli Armati" had died in 1340, but he had been a humble artisan who had never dealt with eyeglasses.
Lack of evidence did not discourage the spreading of this claim about Salvino degli Armati. In 1738, Domenico Maria Manni (1690-1788) of Florence published a book on the subject: Degli occhiali naso inventati da Salvino Armati, gentiluomo fiorentino. Trattato istorico (Historical Treatise on Eyeglasses, Invented by Salvino Armati, Florentine Gentleman). However, critics pointed out that it was impossible to reconcile a "Salvino Armati" with the known genealogy of the Armati family of Florence around 1286, the period when eyeglasses were invented.
Again, despite the lack of evidence, the historian Pasquale Villari (1827-1917) composed and had posted in Florence in 1855 a plaque honoring Salvino degli Armati as the inventor of eyeglasses. (The plaque has since been removed.) Furthermore, between 1850 and 1900, a portrait head of Salvino degli Armati with a plaque containing his epitaph was mounted in the chapel of the Orlandini de Beccuto family of the Church of Santa Maria Maggiore.
In the twentieth century, efforts were made to expose as a hoax the claim that Salvino degli Armati invented eyeglasses: The Dizionario enciclopedico italiano (1955), vol. 1, lists Salvino degli Armati together with an exposure of del Migliore's false claim. Furthermore, Vasco Ronchi (1897-1988), an Italian physicist who specialized in optics, also published an article on the subject as did the American historian of science Edward Rosen (1906-1985) and the Italian professor of ophthamology Giuseppe Albertotti (1851-1936).
- Vincent Ilardi, Renaissance Vision from Spectacles to Telescopes (Philadelphia, Pennsylvania: American Philosophical Society, 2007), pages 13-18.
- Isidoro del Lungo (1920) "Le vicende d'un'impostura erudita (Salvino degli Armati)" (The story of a scholarly fraud (Salvino degli Armati)), Archivio Storico Italiano, LXXVIII, vol. I, pp. 5-53.
- Rosen, Edward (1956). "The invention of eyeglasses". Journal of the History of Medicine and Allied Sciences. 11: 13–46 (part 1) and 183–218 (part 2). doi:10.1093/jhmas/XI.1.13.
- Fernando Leopoldo del Migliore, Firenze città noblissima illustrata [Florence, Most Noble City, illustrated] (Florence, (Italy): Stella, 1684), page 431.
- "Church of Santa Maria Maggiore". Retrieved September 17, 2010.
- Illardi (2007), p. 15, footnote.
- Domenico Maria Manni, Degli Occhiali da Naso Inventati da Salvino Armati Gentiluomo Fiorentino Trattato Istorico (Historical treatise on eyeglasses invented by Salvino Armati, Florentine gentleman), (Firenze (Florence), (Italy): Anton-Maria Albizzini, 1738). Chapter VII. Del vero, e primo Inventore degli Occhiali (On the true and first inventor of eyeglasses), pp. 64 ff.
- Ilardi (2007), p. 15.
- Ranieri Tempesti, Discorso Accademico Sull'istoria Letteraria Pisana [Academic discourse on the history of Pisan literature] (Pisa, (Italy): 1787), pages 60-61.
- Lorenzo Cantini, Saggi istorici d'antichità toscane … [Historical essays on old Tuscany], vol. 5, (Florence, (Italy): Albizziniana, 1796), pages 180-182.
- "Elogio storico di Alessandro della Spina Domenicano" [Historical eloge on Alexander della Spina, Dominican] in: Stanislao Canovai, Prose Varie di Stanislao Canovai delle Scuole Pie [Miscellaneous prose of Stanislao Canovai of the Piarest School (in Florence)], vol. 3 (Florence, (Italy): S. Giuseppe Calasanzio, 1817), pages 34-35.
- Ilardi (2007), pp. 15-16.
- Instituto e Museo di Storia della Scienza: Photo of Armati's epitaph on plaque
- Ilardi (2007), p. 16.
- del Lungo (1920)
- Ronchi, Vasco (1946) "Perche non si ritrova l'inventore degli occhiale?" [Why hasn't the inventor of eyeglasses been found?], Rivista di oftalmologia, vol. 1, pp. 140-144.
- Giuseppe Albertotti, Ulteriori ricerche e studi intorno alla storia degli occhiali [Further research and studies about the history of eyeglasses] (Rome, Italy: Tipografia delle scienze, 1925).