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Top 3 Differences between Bifocal and Progressive Lenses - Coolwinks Blog
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  • Top 3 Differences between Bifocal and Progressive Lenses

  •  Manish  | : April 3, 2017, 7:25 p.m.
  • top 3 differences between lenses
  • Bifocal and progressive lenses have their own advantages. Both are a way of correcting vision. But what a bifocal lens offers, progressives may not. Obviously because they are different. However, many people are still confused about which ones to consider. So, let’s take a glance at a list of differences or differentiating factors between bifocal lenses and progressive lenses.

     

    #1. Definition

     

    Bifocal lenses correct two areas of vision- near and distant. This means the top portion is used to view distant objects while the lower part is used for closer vision and can be of varied shapes:

     

    • Half-moon, also called a straight top, flat top or D segment
    • Complete round segment
    • Narrow rectangular segment
    • The Full bottom half, also known as Franklin style

     

    On the other hand, progressive lenses are technologically advanced lenses that offer a smooth vision because it is divided into three segments. The top area is for distant vision, the intermediate area is apt for computer users and the bottom part is for near vision. When you lower your eyes downward, you can easily read a book or a newspaper and when you look up, you can see distant things and when your eyes focus at the centre, the intermediate section helps you to easily view the computer screen.

     

    Hence, the primary difference between bifocals and progressives is that the latter offers a seamless vision, eliminating the problem of image jump.

     

    #2. Types

     

    In bifocal lenses, there are two basic types- translating and simultaneous with each one having further multiple designs. While the translating bifocals let your pupil to alternate between the two power sections (distant and near) when you see upwards or downwards, the simultaneous lenses allow you to look through near and distant powers at the same time. Like, when you look downwards to read a book, the lower section makes the words appear larger and easy to read.

     

    In progressives, the most common type is a set of concentric circles of lens powers suggested for viewing all distances.

     

    #3. Pros and Cons

     

     

    Benefits of bifocal lenses:

     

    • Eliminate the use of reading glasses
    • Offer sharp vision for near and distant vision

     

    Drawbacks of bifocal lenses:

     

    • Affect depth perception at times
    • When using these types of lenses, you need to learn to adjust between prescriptions
    • May cause eye-strain

     

    Benefits of progressive lenses:

     

    • Enhanced visual acuity for a range of distances, near, intermediate and distant
    • Offer seamless vision

     

    Drawbacks of progressive lenses:

     

    • Tough to adjust because of the diverse range of viewing experiences
    • Expensive than bifocals because of the advanced features

     

    You can shop designer eyeglasses frames with bifocal and progressive lenses online available at Coolwinks.com. Here, you will find a wide collection of eyewear that includes all types of sunglasses and eyeglasses. So, you can also shop progressive lens reading glasses, computer eyewear and much more at best prices.

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