Presbyopia, or far-sightedness, is a common condition that often begins to affect people over the age of 40. It's comforting to know that developing presbyopia when you already need glasses for near sightedness doesn't mean you now need two pairs of glasses. Multifocal lenses will allow you to see clearly always, correcting your presbyopia and myopia at once.
Multifocals are much better than bifocals. Bifocals corrected problems with both near and far vision, but often objects in between were blurry. To create a better product, progressive lenses were invented. These offer and intermediate or transition region allowing you focus on distances that are in the middle. Progressive lenses, which are also called no-line lenses, are a type of multifocal lens that have a gradual curvature across the lens, rather than an obvious and harsh line distinguishing both areas of the lens. This creates not just clearer vision at near and far distances, but also nice, comfortable transitions in between.
These lenses can take some time to adjust to. While the invisible transition of progressive lenses is more elegant, the focal areas are relatively small because the transitional areas also inhabit room.
Bifocals aren't entirely dated though; they are helpful for children and teenagers who have a hard time focusing when reading.
Although it may seem like a quick fix, avoid buying pharmacy bifocals. A lot of these ''ready-made'' glasses have the same prescription in both lenses, which will not help a lot of people.
Having a wrong prescription can lead to headaches, eye strain or even nausea. Presbyopia catches up to most of us by middle age, but it doesn't have to be inconvenient. A simple pair of multifocals will ensure that your quality of life isn't affected.