The history of contact lenses can be traced back to the Swiss inventor Karl Borsch at the end of the 19th century. With his innovative idea, he separated the glass and frame of the glasses, and used a layer of plastic film to stick the spectacle lenses to the eyes, thus achieving the goal of hiding the glasses. Bosch's invention is a cover-type contact lens, consisting of a two-layer structure: the outer layer is a transparent material that completely covers the glass and frame of the glasses, achieving the effect of hiding the glasses; the inner layer is a layer of plastic film. Attaches to the eyes and fixes the spectacle lenses.

Subsequently, in 1910, American inventor George B. Stretton improved Bosch's invention. He separated the glass and frame of the glasses and placed the glass in a replaceable plastic frame to make the glasses fit the eyes better and achieve better concealment.

In 1929, American inventor Daniel Hart once again improved the invention of contact lenses. He designed a compact contact lens that uses a delicate plastic film to bond the glass and frame together to achieve a more perfect concealment effect. His invention was widely used and made contact lenses more practical.

Today, contact lenses are constantly being developed and improved. Modern contact lenses are more comfortable and practical than those designed by Bosch. Not only do contact lenses help people correct their vision, they also give people the confidence to do more.

The fantastic journey of contact lenses continues, and we can look forward to more innovations and breakthroughs, making contact lenses an important tool for improving vision and improving quality of life. Whether you are a contact lens wearer or are interested in this technology, contact lens developments will continue to bring us a better future.