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
Magnetic resonance imaging (MRI) is a relatively new technology first developed at the University of Aberdeen, UK. The first MR image was published in 1973. [From Wikipedia article.]