Many people begin to notice problems with close vision during their 40s. This condition is known as presbyopia. If you already struggle with distance vision, and develop presbyopia, you don’t have to carry a separate pair of reading glasses. Multifocal lenses, which rectify both myopia and presbyopia, help you see clearly at all distances with one pair of glasses.
Before mulifocals, bifocals were widely prescribed, but they have a major flaw; while they help you to focus on both near and distant objects, everything else is blurred. To create something more helpful, progressive lenses were invented, which give you and intermediate or transition part of the lens allowing you focus on everything between near and far distances. Progressive or no-line lenses are a type of multifocal lens that have a subtly curved lens, instead of a noticeable line distinguishing both areas of the lens.
Progressive lenses can take some time to get used to. Even though the gentle lens curve results in a product that is elegant, the lens’s areas of focus are small, so that there’s also room for transitional areas.
Bifocals still have their uses though; they are used to treat kids and teens who experience eye strain, which is the result of a struggle to focus while reading.
Even though it may seem like a quick fix, it’s best to steer clear of pharmacy bifocals. Many of these types of glasses are one-size-fits-all, which means that the both lenses contain the same prescription and are not customized for the wearer.
If your prescription or fit is off you may find yourself suffering from headaches, eye strain or even nausea. During middle age, most of us cannot avoid presbyopia. But it’s important to know that good, multifocal lenses can make it a lot easier