3. How are computer glasses different from other glasses?
Although varifocal glasses are a great everyday companion, they specialise in the near and far range and can therefore reach their limits when working on a computer screen. The progression zone, which is the central zone of the lens dedicated to intermediate distances, is usually too small to ensure optimal visibility on your screen, requiring you to always have to lift your head slightly. In addition, the peripheral areas of varifocal lenses are quite large compared to those of computer glasses, which sometimes prevents you from seeing things on your workstation optimally.
Reading glasses are only aimed at the immediate close-up area; they do not cover screens and everything beyond. Glasses with single-vision lenses for short- and long-sightedness also only optimise vision in the respective area. While they can be used for screen work, they are not designed for the near or intermediate area, where most office work is performed.
Computer glasses, on the other hand, are optimised for daily computer work and offer better visibility on your screen, keyboard, objects, as well as people in the vicinity.