Eyes have a long history. In Chinese and foreign history books, it is recorded that glasses originated in China. The development of glasses has gone through thousands of years, and the eyes have spread from China to foreign countries. The earliest glasses in western countries appeared at the end of 13. At that time, the Italian traveled all over China for the court of the Yuan Dynasty. In this process, he saw someone wearing glasses, and he became very interested. After he returned to China, he spread his eyes to the west, so the place where glasses were first made in the west was this man's hometown.
The most primitive eyes originated from lenses, that is, magnifying glasses. Its manufacture and application are closely related to the appearance of optical lenses. Glasses were invented in China and gradually spread abroad. 1784, an American inventor suffered from myopia and hyperopia, so he invented glasses for both near and far. 1825, British astronomer George Avery invented glasses to correct astigmatism. Two years later, Fuller invented the cylindrical lens, which is also used to correct our eyes. Scientists perfected the stereotyped bifocal lenses, and then merged the bifocal lenses and named them "contact bifocal lenses". Since the invention of glasses, many scientists have improved and perfected them.
The invention of glasses opened a new world for many people. He reopened the window that was closed or half closed for various reasons to see the colorful face of the world. It gives us nearsighted people a chance to see the world again. Although the eye is a small invention, it is of great significance.