The technology used to create prescription lenses has been evolving since their inception over 300 years ago. Within the last few years, that evolutionary change has turned into revolutionary change. Today’s digital lenses, called high definition or free-form, include advances in the lens design, fitting and high-tech manufacturing processes. Digital lenses provide improvement in sharpness, clarity and color; the difference is comparable to watching television in high definition versus with an old cathode ray tube.
Digital lenses are available in single vision or progressive designs, and the difference between them from yesterday to today are huge. For example, now when you get fitted for newer, more technologically advanced progressive lenses, many elements are taken into consideration to maximize your vision: frame shape, pupil height, pupil distance, pantoscopic tilt, frame wrap eye movement and more. This allows for: