what lens and what coating for difficult computer progressive

Discussion in 'Optometry Archives' started by louise, Jan 15, 2008.

  1. louise

    louise Guest

    I've been trying to get a progressive for computer work -
    computer, down to reading. I had one a long time ago but my
    prescription has changed. I had an optometrist do the
    prescription and his optician chose the lens etc.

    I was told to use Zeiss lens as they have a wide field. I
    did so and used the anti glare coating that comes with the
    Zeiss lens.

    Now I am having trouble due to glare - a problem I don't
    have with my old prescription - I believe they are Varilux
    Comfort. I have had a few corneal abrasions (healed but not
    perfectly), and I have light eyes. I am sensitive to glare
    and overly bright lights.

    I visited my ophthalmologist asking for help and was told
    the following: Zeiss uses a very light, and inadequate
    anti-glare coating and that is the reason I'm having this
    problem. Essentially, therefore, I should not use a Zeiss
    lens.

    My ophthalmologist recommended Kodak Unique Progressive lens
    and the use of Teflon Clear Coat for the anti glare. He
    said this would markedly reduce my problems and that the
    lens is also superior.

    Needless to say I've just spent a lot of money on lenses
    that aren't working for me and the optometrist is saying
    there's nothing wrong, while the ophthalmologist is saying
    the choice of lens, and particularly the coating that goes
    with it, will not work for me.

    I would greatly appreciate your thoughts and experiences
    both the the Zeiss anti glare coating and with the new Kodak
    Unique Progressives with Teflon Clear Coat.

    My prescription for the computer glasses:

    DV
    OD +2.25 +2.50 80
    OS +0.75 +3.50 80

    ADD
    OD +1.00
    OS +1.25

    Thanks in advance.

    Louise
     
    louise, Jan 15, 2008
    #1
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  2. louise

    Mark A Guest

    First, if you have polished edges, that is most likely the problem. AR
    coating will not solve this. This is a common mistake made by opticians,
    especially when they get a few extra bucks for the polished edges.

    Zeiss has several different AR coats available (not including the ones with
    a reflective coating in addition to AR coat).

    - Teflon Clear Coat - This is available on Zeiss branded lenses, including
    the RD and Business (computer lenses)
    - Carat Advantage - Premium Zeiss AR coat which I have on my Zeiss ID (very
    satisfied with durability and effectiveness of this coating)
    - Carat - Regular Zeiss AR coat

    If you have the regular Carat AR coat, that "might" explain it. The premium
    Zeiss coatings are excellent and durable.

    The main advantage of Teflon Coated lenses is they are durable and easier to
    clean than traditional AR coats, but the Carat Advantage is very good IMO
    (not sure what the difference is).

    AR coating was invented for use on camera lenses by Carl Zeiss Optics in
    1935. I think your ophthalmologist is blowing smoke and/or has no idea what
    he is talking about (they don't teach about lens products in medical school,
    and even if they did, the products change rapidly).

    Ask for a remake of your Zeiss lens with the Carat Advantage or Teflon Clear
    Coat. Or ask for a refund. There is almost always a remake or money-back
    warranty included with progressive lenses, which is one reason they cost so
    much.
     
    Mark A, Jan 15, 2008
    #2
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  3. louise

    amdx Guest

    I don't know your exact situation, but I found this article very
    interesting.
    http://www.lightenergysource.com/ScotopicTechnical.htm
    The article discusses different light frequencies (temperatures) and how
    by using
    a higher temp light you can use less intensity and still perceive the same
    brightness,
    However the higher temp light is received by the rods in the eye and causes
    your pupil
    to close down. When your pupil is closed down you have less glare within the
    eye and less
    external light to cause the glare.
    I'm not sure I explained it well or correctly, read the article and try
    making some changes
    around you computer.
    Hope this helps, Mike
     
    amdx, Jan 16, 2008
    #3
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