Chart of standard contact Optical Zone sized

Discussion in 'Contact Lenses' started by U-Bob, Jun 23, 2005.

  1. U-Bob

    U-Bob Guest

    Is the information available that shows the standard Optical Zone for
    the available contact lenses on the market? I'd like to do some of my
    own investigating on solutions for my issue with contacts and my big
    pupils. I was content with Surevue, but they were bought by Acuvue
    (sp?) and now evidently are made the same way, which doesn't work for
    me. I tried them. I'm now using the Frequency 55 Aspherics which
    minimizes the issue because of how they are constructed, but I'd like
    to get the data about what contacts might have a naturally larger
    Optical Zone.
    Either that or does someone know who makes contacts with the largest
    Optical Zone (without getting custom made)?

    U-Bob, Jun 23, 2005
  2. U-Bob

    LarryDoc Guest

    Your eye doctor has access to that information from a privately
    published directory of lens parameters. It is not available to the

    I find it very useful in helping contact lens wearers who have larger
    pupils. The range of soft lens optic zones varies from 7.0mm to 10.5mm.

    Freq 55 asphere is 8.0, on the small side, although I cannot understand
    how they would figure the OZ on an aspheric lens, unless it becomes
    aspheric outside the OZ, which is not the case in this case.

    --LB, O.D.
    LarryDoc, Jun 24, 2005
  3. U-Bob

    U-Bob Guest

    Why would this information be kept from the public? I must get it from
    my eye doctor? I believe I have the right to the access of this data.
    It would facilitate my discovery of a better lense by being able to
    narrow down my search. I have noticed my low light reading ability has
    been reduced as well from these contacts. What contacts have approx.
    9.0 mm? That might be a good place to start.
    U-Bob, Jul 17, 2005
  4. U-Bob

    p.clarkii Guest

    i don't believe there is any attempt to keep you from getting this
    information. probably you can get it from the manufacturer's website.
    however, this information is conveniently tabulated and sold to eyecare
    professionals in a publication called Tylers Quarterly. i don't have a
    copy handy to give you the information you request however. it is
    useful in choosing specific brands of contacts for persons with large
    pupil sizes, etc.
    p.clarkii, Jul 17, 2005
  5. U-Bob

    U-Bob Guest

    Actually, you were a big help. I wasn't aware of the name Tyler's
    Quarterly. Some searches on that pulled up a discussion and where you
    can get similar information from a web site called
    Doing a search on contacts with 9mm or greater gave me a list I can
    work with. It also gave me some links to information such as what kind
    of process was made to create the lenses, how they are shaped, etc...
    Very useful indeed.

    U-Bob, Jul 19, 2005
  6. U-Bob

    p.clarkii Guest

    glad to help.
    there's no need for us eye docs to hold such information tightly, we
    offer professional services not secrets.
    power to the people ;)
    p.clarkii, Jul 19, 2005
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