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
Where other diagnostic imaging proceduresâsuch as x-rays, computed tomography (CT) and ultrasoundâoffer pictures of physical structure, molecular imaging allows physicians to see how the body is functioning and to measure its chemical and biological processes.