A lot of people begin to notice problems with reading small print and seeing close objects during their 40s. This condition is known as presbyopia. If you already struggle with distance vision, and are later on diagnosed with presbyopia, you don't need to start carrying and switching between two pairs of glasses. This is because of multifocal lenses, which can take care of both problems, making sure you always see well.
Multifocals are a vast improvement on bifocals. Bifocals corrected problems with both near and far vision, but left middle vision a little blurred. To correct this problem, progressive lenses were developed. These offer and intermediate or transition region which lets you focus on the area between things like the newspaper and street signs. Progressive lenses, which are also known as no-line lenses, are a type of multifocal lens made with a subtle curvature across the lens surface instead of a sharp line distinguishing the two parts of the lens.
These lenses, although better, can require some time to adjust to. Despite the fact that the gentle lens curve is more aesthetically pleasing, the focal areas are relatively small because the transitional areas also inhabit space.
While these days, these progressive lenses (or trifocals) are for presbyopia, bifocals are still used to treat school-aged children and teens with issues like eye teaming, or being unable to focus properly, which causes headaches.
Multifocal lenses are most beneficial when they're customized to your specific needs. When you're ready to get yours, enlist the services of a professional you feel comfortable with.
Glasses that aren't properly customized to you can lead to headaches, eye strain or even nausea. Presbyopia affects most of us by middle age, but it doesn't have to be debilitating. A good pair of multifocals will ensure that your quality of life isn't affected.