The first written mention of the need for correction of deteriorating vision comes from the period around. 100 years before our date. We find her in a letter written by an important Roman, who expresses his frustration and hopelessness over his age and problems flowing. He considers his most serious problem a worsening sight. He worsened so much that he had to rely entirely on his slaves, what was the position of his men unacceptable.

The Right Progress

However, the first evidence of the use of a correction aid comes from the years around 4 before ours year. It was a water-filled sphere that provided magnification and helps with it in the case of Seneca the Roman tragedy, he read all the books that were at that time in Rome. When it comes to the lens edger this is the best deal.

• Another important Roman, who used the correction aid,