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  1. No, they are not obsolete because they are still a great alternative to progressive lenses.
    progressive-glasses.com/will-bifocal-glasses-ever-…
    Absolutely! The most modern bifocal lenses are called “No-line” or “Progressive” lenses. These lenses have a smooth change in focus from the topo of the lens (distance), through the middle (arm’s length), to the bottom of the lens (reading distance).
    skyvisioncenters.com/blog/what-are-bifocals-and-h…
    Luckily, we’ve come a long way since Benjamin Franklin’s bifocals. Today, we have progressive glasses. Progressive lenses provide a seamless transition (i.e., with no visible lines) between three primary vision zones—near, intermediate, and far.
    www.warbyparker.com/learn/bifocal-lenses
  2. People also ask
    This need often arises from a common age-related condition known as presbyopia, which typically starts affecting people in their 40s. However, bifocals can also be useful for those who have different vision prescriptions for near and far distances regardless of age.
    primaryExpertImage

    Dr. Rinta M Babu

    MBBS · 2 years of exp

    The term multifocal indicates that a disease or infection is present at multiple locations in the body. However, related to ophthalmology, Laser refractive surgery is the best surgery for the correction of errors after multifocal IOL(lens) implantation. It will clear out all the residual refractive errors.
    Q&A: Multifocal
    microsoftstart.msn.com
    Franklin’s basic design was used for 100 years and still exists in a modified form today. In the early 1900s, thinner and more attractive lenses were used to refine the Franklin bifocal design. These adjustments continued as smaller, rounded bifocal segments for near vision were developed.
    Bifocal lenses enable the eyeglass wearer to see clearly for both long-range sight and for up-close vision. People in their 40s are prime candidates for bifocals, particularly if they do not need help with their medium-range vision. What Are Bifocal Lenses?
  3. Bifocal Lenses: What They Are, Who Needs Them, and More

  4. What Are Bifocals and What Are They Used For?

    WebMay 31, 2023 · Bifocals are glasses that correct presbyopia, a natural loss of near-focusing ability that affects older people. Learn about the history, types, pros and cons of bifocal lenses and how they work.

  5. What Are Bifocals? How Do They Work? | Warby Parker

    WebJun 21, 2023 · Bifocals are eyeglasses with two optical powers in one lens, invented by Benjamin Franklin in 1784. Learn about the different types of bifocal lenses, when they are prescribed, and how progressives are a

  6. Bifocals: Seeing Clearly at Every Distance (But Are They Right for …

  7. Progressive Lenses Vs. Bifocals: Which Is Better? | Yesglasses

  8. Get Used to Your New Bifocals or Progressives - WebMD

  9. Bifocal Glasses: How They Work and Who Needs Them - Zenni …

  10. Bifocals vs Progressives: Which Is Better? | Zenni Optical

    WebJan 20, 2023. Learn the difference between bifocals and progressives from the pros at Zenni Optical. What Are Bifocals? Bifocals are glasses that have two viewing zones separated by a visible line – traditionally, a …

  11. Bifocals - Wikipedia

  12. Bifocal Lenses: Pros, Cons, and Who Is a Candidate?

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