Bifocal vs. Progressive: Choosing the Right Lens for You

Progressive and bifocal lenses are two types of multifocal lenses that can be used to correct presbyopia. Presbyopia is an age-related vision issue that causes the eyes to lose their near focusing ability. This can make it harder to see the text on your phone, read a book or menu, or even thread a needle.

Most people start developing symptoms of presbyopia in their 40s. In addition to causing blurred vision at close range, the condition can cause headaches, vision distortion, and eye strain.

If you already wear glasses for nearsightedness (myopia), you currently use single-vision lenses to correct your distance vision. When you develop presbyopia, you’ll need lenses that correct your near vision too. This is where multifocal lenses like bifocals and progressives are most helpful, because they correct vision at multiple distances.

So, how do you decide which lenses will be better for you? It’s probably gone around and around in your head: Bifocal vs. progressive. Progressive vs. bifocal. But before you can narrow things down, it helps to understand the difference between bifocal and progressive lenses.

Understanding Bifocals

Bifocal glasses have lenses with two optical powers in each lens:

• The upper part of the lens corrects distance vision, which makes it easier to see objects that are far away. This can be helpful when you’re driving.
• The lower part of the lens corrects near vision, which makes it easier to see up-close objects. This can help you see clearly when reading.

To put it simply, a bifocal lens has two prescriptions separated by a visible horizontal line.

If you want to see a distant object clearly, you need to look through the top of the lens for distance vision correction. If, however, you want to see an object within an 18-inch distance clearly, you should look down and through the lower lens portion that corrects near vision.

Types of Bifocal Lenses

The lower part of your bifocal lens comes in various shapes and designs, such as:

• Flat-top – This is also known as the D-segment, as it has a half-moon shape.
• Round segment – This is because it has a roundish shape.
• Ribbon segment – The lower part is narrow and has a rectangular shape.
• Executive – The near-vision area covers the entire lower area of your lens.

The Advantages of Bifocal Lenses

Bifocals offer several advantages for wearers, including:

• They provide clear vision at near and far distances.
• Wearers enjoy a wide field of vision when reading.
• The visible line between powers provides guidance when shifting from near to distance vision and vice-versa.
• You only need one pair of eyeglasses to see clearly at multiple distances.

The Disadvantages of Bifocals

There are also some disadvantages to wearing bifocals, such as:

• Bifocals can take some time to adjust to.
• They only correct near and distant vision. If you need intermediate vision correction for computer work, progressives may be a better option for you.
• They can temporarily lead to visual distortions. This can happen when walking up the stairs or looking down and noticing that your feet appear larger.
• You may feel that the visible line separating the optical powers makes you look older.

Understanding Progressives

Glasses with progressive lenses provide three areas of vision correction, helping you see objects clearly at multiple distances:

• The top part corrects distance vision to help you see faraway objects clearly.
• The middle part corrects intermediate distance vision for computer work.
• The bottom part corrects near vision for reading and other near-work activities.

Progressives don't have a visible line that separates the optical powers. Instead, they offer a smooth transition between powers.

Your eye doctor may recommend progressive lenses when you develop presbyopia if you're also nearsighted, farsighted, or have astigmatism.

Types of Progressive Lenses

There are several different types of progressive lenses, including:

• Computer progressive lenses – The intermediate vision zone in computer progressive takes up the most space in the lens, unlike in regular progressive lenses. They offer a wider field of vision for computer work, which may make them less suitable for distant vision correction while driving.
• Premium progressive lenses – These are customized based on your needs and are suitable for all-day wear. They fit smaller frames.
• Ground-view progressive lenses – These are designed for people who spend more time looking at the ground. For example, a golfer may use this type during a game because they have to look at the ground constantly.
• Short-corridor progressive lenses – This type fits smaller frames but, as a result, offers a smaller field of vision.

The Advantages of Progressive Lenses

Progressives offer numerous benefits to wearers. They:

• Allow for different activities at various distances without the need to switch glasses for distant or close objects.
• Offer a smooth visual transition when looking at different distances.
• Eliminate self-conscious thoughts associated with visible lines between optical powers.
• Help save money by eliminating the need for multiple pairs of glasses.
• Reduce eye strain by removing the visible separating line that can cause image jumps.

The Disadvantages of Progressive Lenses

While progressive lenses are a popular choice with many benefits, they also have some disadvantages:

• Many people need time to adjust to progressives.
• They may come with a higher price tag than single-vision lenses or bifocals.
• They may cause peripheral (side) vision distortion when first used.
• Not all frames can be fitted with progressive lenses.

Are Progressive Lenses Bifocals?

While progressives and bifocals are both types of multifocal lenses that can be used to correct presbyopia, they are different.

Key Differences Between Progressive and Bifocal Lenses

There are several features that set the two lens types apart:

Focusing zones

• Bifocal lenses have two focusing powers separated by a noticeable line, which can be distracting for some users.
• Progressive lenses have three optic zones but don’t have lines separating your prescription areas. They may be recommended if you want a smooth transition between powers without visible lines.

Distances corrected

• Bifocal lenses correct near and distance vision.
• Progressive lenses correct near, intermediate, and distance vision.

Appearance

• Bifocal lenses may cause feelings of self-consciousness since they have a visible line that separates the lens areas. The bifocal line is associated with old age, so you may feel that you look older when wearing bifocal glasses.
• Progressive lenses may eliminate the feeling of self-consciousness and offer a more youthful look since they don’t have a visible separating line. This also makes your family and friends unable to tell that you’re wearing glasses with multiple focusing powers.

Adjustment period

• Bifocal lenses may be easier to adjust to than progressive lenses because they only have two focusing powers.
• Progressive lenses can take up to two weeks until your eyes adjust to wearing them.

Choosing Between Progressive and Bifocal Lenses

The best way to decide between progressives and bifocals is to talk to your eye doctor. They’ll help you weigh the pros and cons of each, and discuss why one may be better for you than the other.

Here are some specific factors to consider:

• Optic zone separation – Bifocals have a noticeable line that separates the near and distance vision zones. Progressives transition smoothly between zones without visible lines.
• Computer use – Bifocals are not ideal for computer work because they don’t offer intermediate vision correction. On the other hand, progressives correct vision at near, intermediate, and far distances.
• Price – Progressives are generally more expensive than bifocals.

If you think you may have presbyopia and may need a new prescription for your glasses, schedule a visit with your eye doctor.