How was the case of the weak-sighted before the invention of glasses!

How was the case of the weak-sighted before the invention of glasses!

Metabolism is growing at a very high rate, and scientists believe that by 2050, the number of people with nearsightedness will be more than 4.7 billion people, or nearly half of the world's population. Eyeglasses are the most appropriate and safest solution for people with vision problems. But how it was
Does the visually impaired deal in the past in the absence of medical glasses?

How was the case of the weak-sighted before the invention of glasses!

 Before the invention of glasses, humans tried to adapt to visual problems. People never drove cars and did not have to see signs or rely on their Internet work, as we do today. There were functions that did not rely on the sense of sight, enabling the visually impaired to have a certain value, such as the function of oral historians and musicians and to tell stories. Visually impaired professionals were not practicing vision-based professions such as hunting and others.
Reading was not widespread before 1700. The books were hand-made and very few, read by a few people and not by the general public. Even after the invention of printing, the books available were easier, but still rare for the average man.

The big problem was the inability of the visually impaired to defend themselves from predatory attack. When an animal approaches any danger they are in an unenviable situation, they may not realize it until it's too late.

Certainly, the greater the visual problems, the greater the problems faced by the visually impaired and the greater the suffering and the risks to which this person is exposed.

old glasses

Things changed at the end of the 13th century when scientists began looking for a cure for visual problems. At that time the first glasses were invented in northern Italy. Neil Handley, the curator of the Museum of Optics in London, said: "That area was a center for glass production. Merchants carried glasses along the Silk Road down to Asia. "
The glasses of that era were fixed over the nose without arms or were fixed by a strap that spun over the head and was fixed by the hat.

                                           

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