when were the first pair of eyeglasses made
Glasses Robert Grosseteste's treatise De iride ("On the Rainbow"), written between 1220 and 1235, mentions using optics to "read the smallest letters at incredible distances". A few years later in 1262, Roger Bacon is also known to have written on the magnifying properties of lenses.[13] The development of the first eyeglasses took place in Northern Italy in the second half of the 13th century.[14]