Are you over 40 and struggling to read small print? You might be developing presbyopia, a condition that affects many of those who are approaching middle age. If you're already a glasses wearer, and are later on diagnosed with presbyopia, you won't need to carry a separate pair of reading glasses. Multifocal lenses will allow you to have good vision always, tending to both issues with just one pair of glasses.
Multifocals are far superior to bifocals. Bifocals did correct problems with both near and far vision, but often things in between were blurry. To correct this problem, progressive lenses were made. These offer and intermediate or transition part of the lens which lets your eyes to focus on distances that are somewhere in the middle. Progressive or no-line lenses are a type of multifocal lens featuring a gently curved lens, instead of a noticeable line dividing the two areas of the lens. This makes for not only better vision at near and far distances, but also good transitions in between.
However, it can take some time to adjust to no-line lenses. Despite the fact that the subtle lens curve results in a product that is elegant, the focal areas are quite small because more lens space is used for the transitional areas.
Even though these progressive lenses (sometimes called trifocals) are for presbyopia, bifocals are still used to aid children or adolescents who experience eye problems like eye teaming, or being unable to focus properly, which in turn, can lead to eye strain.
Multifocal lenses work best when they're customized to your specific requirements. When you're ready to get fitted, make a point to work with a professional you feel comfortable with.
Having an incorrect prescription can lead to headaches, eye strain or even nausea. Unfortunately, presbyopia is a reality of aging. But don't forget; multifocal lenses can make all the difference.