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Progressive Lenses: The Preferred Choice For Presbyopia Correction

Why progressive lenses? You may be maturing, but "mature" doesn't have to mean "old." If you are in your 40s (or older) and are having trouble reading fine print with your glasses, progressive lenses offer a younger-looking appearance and other advantages over the lined bifocal lenses your parents wore.

Progressive lenses, sometimes called "no-line bifocals," eliminate the visible lines of traditional bifocals and trifocals and hide the fact that you need reading glasses.

With progressive lenses, no one has to know whether you're wearing glasses just for fashion — or because your arms have "grown too short" for you to see up close.

Advantages Of Progressive Lenses Over Bifocals And Trifocals

In addition to cosmetic advantages, progressive multifocal lenses provide a more natural correction of presbyopia than bifocal or trifocal prescription eyeglasses.

Example of a progressive lens design
Progressive lenses are line-free multifocals that have a seamless progression of added magnifying power for intermediate and near vision.

Instead of having just two or three lens powers like bifocals or trifocals, progressive lenses are true "multifocal" lenses that provide a seamless progression of many lens powers for all viewing distances.

With progressive lenses, you can look up to see clearly across the room and in the distance. You also can look ahead to view your computer in the intermediate zone and drop your gaze downward to read and do fine work comfortably through the near zone of the lenses.

And it's easy to adapt to today's modern progressive lenses.

A "corridor" of optimum lens power runs vertically down each progressive lens. Your eye care practitioner will take careful measurements of your eyes and eyeglass frame in order to place the corridor in just the right location so your eyes can naturally access the various powers within the lens for comfortable viewing at all distances.

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And progressive lenses eliminate an annoying problem caused by bifocal and trifocal lenses known as "image jump."

With conventional bifocals and trifocals, images seem to "jump" as your eyes move past the sharply defined boundary between the distance and near parts of the lens. With progressive lenses, the transition between lens powers within the lens is smooth and seamless, letting you change focus from distance to near and back again more comfortably, with no image jump.

Choosing The Best Progressive Lenses For Your Needs

For all powers of progressive lenses to fit within a pair of eyeglasses, frames in the past had to be relatively large. If the frame was too small, the reading portion of the lens would sometimes end up uncomfortably small after the lens was cut to size and inserted in the frame.

But lens manufacturers have overcome this problem by introducing "short corridor" progressive lenses with compact designs that provide larger reading zones for today's smaller, fashionable frames.

The popularity of progressive lenses has exploded in recent years, making progressives the most widely purchased lenses for correcting presbyopia. Today there are many progressive lens designs to fit virtually any needs.

The differences in lens design are related mainly to the length and width of the progressive power corridor and how much of it is devoted to different viewing distances. Different areas of the corridor may be expanded, depending on the design philosophy of the manufacturer and the intended purpose of the lens.

Some progressive lenses are made specially for computer use, for example, and have a wider intermediate zone. Other progressive lens designs may have a larger reading portion. Your eye care practitioner is in the best position to evaluate which lens style will work best for you.

Progressive lenses are available in a wide variety of materials, including regular plastic and glass, polycarbonate, and high-index plastic materials. They also are available as photochromic lenses that automatically adjust to different lighting conditions.

Regardless of the progressive lens design or lens material you choose, selecting lenses with anti-reflective coating will enhance visual clarity and comfort (especially for activities like driving at night) and eliminate distracting lens reflections that prevent others from seeing your eyes clearly.

Adapting To Your Progressive Lenses

When you are fitted with your first pair of progressive lenses, you may need a short adaptation period to become fully comfortable using the lenses. This might take only a few minutes, or it could take a few days.

Interactive eyeglass and contact lens prescriptions.
Try these interactive Rx forms to learn what the measurements mean on your eyeglass prescription or contact lens prescription.

Minor peripheral aberrations are unavoidable in progressive lenses. It is impossible to create a seamless (line-free) multifocal lens that has multiple powers for different viewing distances without also creating unwanted aberrations somewhere in the lens.

Lens designers and manufacturers have made significant strides in minimizing these aberrations and "pushing" them to the periphery of modern progressive lenses. But peripheral aberrations will be present even when progressive lenses are flawlessly produced using the latest manufacturing equipment and processes — they are an unavoidable optical limitation of all progressive lenses.

Because of these aberrations, if you glance to the far right or left, especially when looking down, you might notice your vision is slightly blurred. Peripheral aberrations also might cause you to experience a sensation of "swim" when you make quick head movements.

If you experience these problems when you start wearing a new pair of progressive lenses, you usually can eliminate them by making slight head movements to look more directly at objects. Most people who notice peripheral vision problems when wearing progressive lenses find that these issues are relatively mild and disappear as they adapt to wearing the lenses over a period of a few days.

If you have a lot of hyperopia, adapting to progressive lenses may take a bit longer than if you are only mildly farsighted or are nearsighted. But with today's lens designs, nearly everyone can wear progressive lenses successfully.

To make sure you get the best value in progressive lenses, talk to a professional optician, who will be able to recommend a customized progressive lens solution for your specific needs and give you helpful tips on adapting to and caring for your new lenses.

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Dr. Gary HeitingAbout the Author: Gary Heiting, OD, is senior editor of AllAboutVision.com. Dr. Heiting has more than 25 years of experience as an eye care provider, health educator and consultant to the eyewear industry. His special interests include contact lenses, nutrition and preventive vision care.

Original version of this article was by Liz DeFranco, ABOC, NCLC.

Page updated April 2018

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