LibraryFan asked in HealthOptical · 1 decade ago

What is the real difference between plastic and polycarbonate lenses?

Is polycarbonate just a marketing ploy to get you to pay more or is it a good idea? What is the difference between it and plastic?

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  • 1 decade ago
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    Regular plastic (CR-39)

    1) Thicker

    2) Not shatter-proof

    3) better optically (higher Abbe value)

    Polycarb

    1) Thinner

    2) Shatterproof

    3) lower optical quality

    Is it a sales ploy? Depends on what your prescription is and what kind of frame you're using. Lower prescriptions <2.00 don't really need polycarb to make the lens thinner. However, there are some frames (rimless, semirimless) that require polycarb lenses.

    If you go to one of the cheapo bargain places, selling poly is often a sales ploy to get you to pay more money. I've seen A LOT of people with very small prescriptions who walk out of those places with polycarbonate lenses they don't need. Bait and switch, as always.

    Source(s): I'm an optometrist
  • 4 years ago

    Polycarbonate Lenses Vs Plastic

  • Anonymous
    5 years ago

    This Site Might Help You.

    RE:

    What is the real difference between plastic and polycarbonate lenses?

    Is polycarbonate just a marketing ploy to get you to pay more or is it a good idea? What is the difference between it and plastic?

    Source(s): real difference plastic polycarbonate lenses: https://shortly.im/LoTtW
  • 1 decade ago

    Polycarbonate is a versatile, tough plastic used for a variety of applications, from bulletproof windows to compact disks (CDs). The main advantage of polycarbonate over other types of plastic is unbeatable strength combined with light weight. While acrylic is 17% stronger than glass, polycarbonate is nearly unbreakable. Bulletproof windows and enclosures as seen inside banks or at drive-throughs are often made of polycarbonate. Add to this the advantage that polycarbonate is just one-third the weight of acrylic, or one-sixth as heavy as glass, and the only drawback is that it is more expensive than either acrylic or glass.

    Polycarbonate is also used in the electronics industry. Apple’s original iMac featured polycarbonate mixed with clear colors for a transparent computer case. Many cell phones, pagers, and laptops also use clear or opaque polycarbonate in their casings.

    Polycarbonate lenses are also used in quality sunglasses that incorporate filters to block ultra-violet (UV) rays and near-UV rays. The lenses can also be polarized to block glare, and their high impact resistance makes them perfect for sports. Many sunglasses manufacturers choose polycarbonate because it can be easily shaped without problems like cracking or splitting, resulting in extremely lightweight, distortion-free, fashionable glasses that feature all of the health benefits doctors recommend.

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  • 1 decade ago

    One of the main differences between traditional plastic and polycarbonate is that polycarbonate material is impact resistant and shatter proof.

    Source(s): personal knowledge being an optician
  • 4 years ago

    What Is Polycarbonate

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