With free-form lenses (also called digital high-definition lenses), the fabrication of the lenses from wearer's eyeglass prescription is optimized with computer-controlled surfacing equipment that is much more precise than conventional tools.
Medical Imaging began with radiography after the discovery of x-rays in 1895 by Wilhelm Roentgen, rÃ¶ntgen A german professor of. physics
Credit: liz west CC-BY-2.0. The early handheld visual aid was found in the ancient ruins then known as Nineveh, and it has no known inventor. Eyeglasses came into greater fashion around 1752 when James Ayscough invented eyeglasses with hinged earpieces and tinted lenses, much like modern sunglasses.