A lot of people begin to notice problems with close vision during their 40s. This is known as presbyopia. But, this doesn't mean that those who already wear prescription eyeglasses for nearsightedness need to own two pairs of glasses. This is because of multifocal lenses, which correct both problems, making sure you always see well.
Before mulifocals, bifocals were the popular fix, but they were far from perfect; even though they help you to focus on both near and distant objects, everything else is blurred. In an effort to create something more helpful, progressive lenses were invented, which offer a transition part of the lens allowing your eyes to focus on distances that are in the middle. How does this work? Progressive lenses are expertly curved, unlike a bifocal lens, which is harshly divided. Because of this, progressive lenses are also known as no-line lenses.
These lenses, although better, can take some time to adjust to. Despite the fact that the gentle lens curve results in a product that is elegant, the focal areas are quite small because the transitional areas also inhabit room.
Bifocals aren't entirely dated though; they are used to treat kids and teens who have a hard time focusing when reading.
It's also important that you get fitted properly, and not turn to store-bought bifocals. A lot of these types of glasses are one-size-fits-all, which means that the both lenses contain the same prescription and that the optical center of the lens is not customized for the wearer.
Having a wrong prescription can lead to eye strain, discomfort and headaches. Unfortunately, presbyopia is just a part of our bodies' aging process. But keep in mind that multifocal lenses can make all the difference.