What is progressive lenses
progressive lenses are true "multi focal" lenses that provide a smooth, seamless progression of many lens powers for clear vision across the room, up close and at all distances in between.
With progressive lenses you never have to take your glasses off, you will clearly see the distance, Intermediate like computer distance, near like reading, and all the distances in between.
With progressive lenses, there's no need to bob your head up and down or adopt uncomfortable postures to see your computer screen or other objects at arm's length.
Holding your head in a comfortable position, you can simply look straight ahead to see in the distance, move your eyes slightly downward to view your computer through the intermediate zone and lower your gaze a bit farther to read comfortably up close.