Varifocals, also known as progressive lenses, make life easier by helping you to see at all distances, without having to strain or change your glasses. With varifocals, you can switch between long, intermediate and close range easily.
The top section of the lens gives you clear distance vision and as you look down through the lens it gradually increases in strength to reading vision at the bottom.
They are perfect for driving and using the satnav for example, when your eyes need to be working on several tasks at different distances, at the same time. They are also much more cosmetically attractive as you can’t see the change between distances.
