Posts tagged Kalt

The invention of the contact lens dates back before 1877, when Adolf Fick, Eugene Kalt and August Muller made the first contact lens from glass. Leonardo da Vinci created sketches encapsulating the concept of a covering for the eye as early as 1508.In 1801, Thomas Young decided to work on a device to help correct his own vision. What Young did was to fit a water-filled glass tube with a microscopic lens. However, it would be a number of years before anyone developed a device that could fit onto the eye itself.So we come to that date, 1887. Fick, Kalt and Muller made the first known contacts from thick glass, which covered the entire eye. As one might imagine, such an object was not very comfortable to wear. However, they were able to correct some vision problems, but because of the comfort issues, patients could not keep the lenses in their eyes for more than a few hours.In the early part of the last century, scientists came to the rescue. In 1934, a new plastic called polymethylmethacrylate (PMMA) was created, which was to revolutionise the development of contact… More >>