Have you started to have difficulty reading small print? If you're close to middle-age, you might have presbyopia. It's comforting to know that having presbyopia when you already need glasses for near sightedness doesn't mean you now need two pairs of glasses. Multifocal lenses, which correct problems with both near and far sight, let you see well at all times, with one pair of glasses.
In the past, bifocals were the popular fix, but they were far from all that great; even though they help you to focus on both near and distant objects, everything in between is blurred. In an effort to correct this issue, progressive lenses were developed. These give you and intermediate or transition part of the lens that allows you focus on distances that are somewhere in the middle. How does this work? Progressive lenses feature a subtle curvature, unlike a bifocal lens, which is harshly sectioned. Because of this, progressive lenses are also called no-line lenses.
But, you might take some time to adjust to no-line lenses. Despite the fact that the subtle transition of progressive lenses results in a product that is aesthetically pleasing, the lens's areas of focus are small, so they they're all able to fit.
Bifocals aren't entirely dated though; they are helpful for kids and teens who suffer from eye strain, stemming from a difficulty focusing while reading.
It's also important that you get fitted properly, and not turn to store-bought bifocals. Many of these ''ready-made'' glasses are one-size-fits-all, which means that the both lenses contain the same prescription and are not customized for the wearer.
Having an incorrect prescription can lead to eye strain, discomfort and nausea. Unfortunately, presbyopia is a reality of getting older. But don't forget; multifocal lenses can make all the difference.