"Medieval European glasses traces" can be found from the books of the 16th century

The invention of eyewear made it possible to read book letters and see distant objects without extremely closing their eyes even for people with reduced eyesight. Therefore, although it is an invention of glasses which is said to have greatly influenced the history of humanity, the inventor's name is not precisely specified, but there are various opinions about the inventor. It seems that the evidence that such spectacles were used in medieval Europe remained in medieval manuscripts.

Early printed book contains rare evidence of medieval spectacles
http://sites.utexas.edu/ransomcentermagazine/2012/04/17/medieval-spectacles/

Many people have been named as inventors of eyeglasses so far, but recent researchers have shown that there is no reliable evidence for either. The inventor of glasses has not been able to identify anyone, but probably in the 13th century ItalyPisaIt seems that it is thought that it was thought that it was produced by a craftsman who lived in the vicinity.

The eyeglasses invented in the 13th century, in the 14th centuryVeniceIn the 15th century it became manufactured and sold in most countries of Europe. Thousands of eyeglasses are imported in England,FlorenceI was leading the production of glasses in Europe.

However, although it is known that eyeglasses were widely produced in Europe, it is very difficult to actually discover the glasses at the time. For example, even in Florence where the production of glasses was actively performed, one pairrivetOnly stop glasses are found. However, traces of such valuable medieval eyewear in spectacles are reflected in the library at the University of Texas at Austin "Harry · Ransom CenterIt was found that it was found.

bySérgio Bernardino

When the staff at Harry Ransom Center had been inspecting old books, I discovered that glasses-type stains reddish on the page were attached. The books that left marks of eyeglasses are missionaries who were active in the 16th centuryLuis de GrenadaHe told me that he was a manuscript written by Mr. Mori.

The case that marks of eyeglasses remain on book pages is in WashingtonFolger, Shakespeare, LibraryAlthough it is found also in the manuscript etc, it is very unusual to be found. Early glasses were metal and bone rims covered with two convex glasses, and we were able to connect the two convex glasses and the rim with rivets and fixed it on top of the nose and in front of our eyes. In a little later time, glasses using leather frames appeared instead of rivets, and the eyeglasses discovered this time are reported to have a high possibility of eyeglasses using leather frames.

According to the Harry Ransom Center report, the pages marked with eyeglasses are said to be reused parchment from older books than the era when Mr. Grenada wrote the manuscript. As patterns that remained the traces of eyeglasses, the pattern that had already been marked with eyeglasses when Mr. Grenada reused the parchment, and the pattern that had been attached to glasses by those who continued using the glasses of the old age after Mr. Grenada made a manuscript Harry Ransom Center says it can be thought of a pattern marked with a mark.
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