What lens material is recommended for groove mounting in a full-rim frame?

Discussion in 'Glasses' started by Dave, Aug 28, 2005.

  1. Dave

    Dave Guest

    I'm considering getting a full-rim frame that requires the lenses to be
    groove mounted. The frame is model Modo 1062, which is pictured here:


    What lens material would you recommend for groove mounting? The person
    selling the frame said that polycarbonate lenses are recommended for it. He
    said that if I go with any other lens material, whether it be 1.67 lenses
    or standard CR-39, the lens will be prone to chipping. I don't want to get
    polycarbonate lenses because I read that their optical quality is horrible
    compared to other lens materials. If I have no choice but to use
    polycarbonate lenses, maybe I should consider looking for another frame.

    I was planning on getting the 1.67 lenses at Costco fo $70. I know that the
    1.67 lens is overkill for my prescription, but I have to consider the
    weight and comfort of my glasses because I wear them pretty much all the
    time. The 1.67 lenses will probably be much lighter and more comfortable to
    wear. However, I'm concerned that the 1.67 lenses will be too thin to be

    My prescription:

    sphere: -3.250
    cylinder: -0.750
    axis: 172

    sphere: -1.500
    cylinder: -0.250
    axis: 180
    Dave, Aug 28, 2005
  2. Dave

    Mark A Guest

    Consider getting a Trivex material, like Hoya Phoenix or Younger Trilogy.
    This is a mid index (1.53) index lens that has similar impact resistance and
    tensile strength as polycarbonate, but has excellent optics (abbe value 45).
    Trivex is very light with a density of only 1.11 g/cm3. Trivex is also more
    scratch resistant than polycarb.

    Some opticians may not have heard of it, by most independent opticals that
    deal with large optical labs (especially that carry Hoya or Younger lenses)
    should be able to get it.

    Mark A, Aug 28, 2005
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