Are you having trouble when reading fine print? If you're close to middle-age, you might have presbyopia. If you already wear glasses for distance vision, and develop presbyopia, you won't have to start carrying and switching between two pairs of glasses. Multifocal lenses help you have good vision always, tending to your presbyopia and myopia with just one pair of glasses.
Multifocals are far superior to bifocals. Bifocals do fix problems with both near and far vision, but usually things in between were blurry. In an effort to create something better, progressive lenses were made, which give you a transition region allowing you focus on distances that are in the middle. Progressive or no-line lenses are a type of multifocal lens made with a subtly curved lens surface rather than an obvious and harsh line dividing both parts of the lens. This provides not only clearer vision at near and far distances, but also smooth, easy transitions in between.
However, it can take a bit of time to adjust to these lenses. Even though 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.
Even though these progressive lenses (or trifocals) are for presbyopia, bifocals are often employed to help young patients who have other issues like eye teaming, or being unable to focus while reading, which causes headaches.
When you go get fitted for multifocal lenses, it's important 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, needs and line of vision.
A badly fitted pair of glasses can lead to eye strain, discomfort and nausea. Presbyopia affects the majority of us at a certain age, but it doesn't have to be restricting. A simple pair of multifocals can ensure that your quality of life isn't affected.