16581671
Descripción
Fichas por Terry Mumma, actualizado hace más de 1 año
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Creado por Terry Mumma
hace más de 5 años
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| Pregunta | Respuesta |
| Though there is earlier evidence of spectacles, the invention is credited to this inventor in 13th century Florence | Salvino d'Armati |
| It was not until the 16th century that lenses of this type were developed | minus (or concave) lenses for treating Myopia (nearsightedness) |
| this type of spectacle lenses were not developed until the 19th century | toric lenses for treating astigmatism |
| bifocals were invented in the 18th century by this famous American polymath | Benjamin Franklin |
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