
Lens were first used in ancient Egypt.
Glasses were invented in Italy in around 1284.
We don't know the inventor.
First glasses were spectacles for the aged.
In 1440 glasses were able to correct near-sightedness.
In 1604 glasses begun to be used by the vision correction.
The astigmatic lens first was developed in 1825.
The frame of the most widespread shape most was developed in 1727.