In ancient times
In ancient times and 2000 years ago in China, eyeglasses were already "fashionable". However, they were first used to improve vision in Arabia in the 11th century until they came to Europe via Venice by the end of the 13th century.
The first attempts to remedy visual impairments directly on the cornea took place around one hundred years ago. But even in the 50s, manual corrections still went wrong, such as in Japan.
It wasn't until the 70s that the Russian professor Fjodorow managed to correct nearsightedness using radially applied incisions called "radial keratotomy". The disadvantages of this widespread method were deep scarring as well as reduced stability and resilience of the cornea.
In New York, June 1983
Photorefractive corneal surgery is born and soon begins its triumphal progress around the world. Today, farsightedness, nearsightedness and corneal irregularities can be treated with the excimer laser technique successfully. Millions of patients around the world have already undergone this treatment. Moreover, scars that have formed on the cornea due to external influence and have a considerably effect on eyesight can virtually be "rubbed out" with the laser.