Are you experiencing trouble when reading fine 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 specs. Multifocal lenses help you have good vision all the time, correcting both issues at once.
Before mulifocals, bifocals were widely prescribed, but they have a significant disadvantage; even though they help you to focus on both near and distant objects, middle distance is blurred. In an effort to create something more helpful, progressive lenses were made. These offer and intermediate or transition region which lets your eyes to focus on distances that are in the middle. Progressive lenses, which are also known as no-line lenses, are a type of multifocal lens that have a gradual curvature across the lens surface instead of a sharp line distinguishing the two parts of the lens.
Progressive lenses may require some time to get used to. While the invisible lens curve is more aesthetically pleasing, the focal areas are relatively small because more lens space is used for the transitional areas.
Bifocals aren't entirely dated though; they are helpful for children and teenagers who suffer from eye strain, stemming from a difficulty focusing while reading.
When being fitted for multifocal lenses, it's crucial that you're attended to by an eye care professional you feel comfortable with. Multifocal lenses work best when they're customized to your eyes, prescription and line of vision.
A badly fitted pair of glasses can lead to headaches, eye strain or even nausea. Presbyopia affects most of us by a certain age, but it doesn't have to be restricting. A simple pair of multifocals will make a world of difference.