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
What Is Sonography, and How Is It Being Used in the Healthcare Field? Developed in World War II to locate submerged objects, sonography (also called ultrasound) was first used in medicine to take an inside look at prenatal development in the early 1970s. Since then, sonography has moved into multiple areas of healthcare in and it is utilized in both a diagnostic and therapeutic capacity.