Have you started to have difficulty when reading fine print? If you're close to middle-age, you might have presbyopia. Fortunately, this doesn't mean that those who already wear prescription eyeglasses for distance vision need to carry around two pairs of glasses. This is because of multifocal lenses, which help you with both problems, ensuring that you always see clearly.
At one point, bifocals were the popular fix, but they have a significant flaw; even though they help you to focus on both near and distant objects, middle distance is blurred. To correct this problem, progressive lenses were developed. These give you a transition part of the lens which lets your eyes to focus on the area between near and far distances. Progressive lenses, which are also known as no-line lenses, are a type of multifocal lens that have a subtle curvature across the lens surface rather than an obvious and harsh line dividing both areas of the lens.
These lenses, although better, can require some time to get used to. While the subtle lens curve results in a product that is aesthetically pleasing, the lens's areas of focus are small, so that there's also room for transitional areas.
Bifocals still have their uses though; they are used to treat children and teens who have a hard time focusing when reading.
Although it may seem like a quick fix, it's best to steer clear of drug store bifocals. Most of these types of glasses have the same prescription in both lenses, which will not help a lot of people.
Wearing an incorrect prescription can leave you with headaches, eye strain or even nausea. Presbyopia catches up to the majority of us at middle age, but it doesn't have to be inconvenient. A good pair of multifocals will ensure that your quality of life isn't affected.