How to reduce ghost images in glasses?

Discussion in 'Glasses' started by BS, Jul 18, 2003.

  1. BS

    BS Guest

    Each of my last three sets of glassses (acquired at 2-year intervals) seems
    to cause slightly more intense ghost images than the last. It's especially
    annoying when I try to read in the evening and one line of text is ghosted
    onto the next.

    What causes the ghosting effect, and what can I do to minimize it? Would
    this require going to a lower-index lens material? I'm currently using
    high-index (1.66?) lenses with a correction of -11.5 spherical, 2 or 3
    cylindrical at 29 (one eye) and 160 (other eye).
     
    BS, Jul 18, 2003
    #1
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  2. BS

    Mark A Guest

    The higher the index, generally the more distortion in the lens. As the Rx
    gets stronger this can cause it to get worse. But I don't know for sure if
    that is your problem. It would help to know exactly what brand, model, and
    lens material your glasses are. There are various lens designs, and some are
    better than others.

    Your problem might also be improved by a better fitting of the frames on
    your face, and lenses need to be positioned correctly in the frame. Did you
    discuss these problems with your optician? What did they say?
     
    Mark A, Jul 18, 2003
    #2
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  3. BS

    Rishigg Guest

    Mark A wrote:


    You sell devices that distort reality, cause harm, and are useless.

    What kind of profession is yours?

    It is really unbelievable!!!

    Your marketing skills are powerful: you transform a misconception in a
    viable good that people hanker for. Is this medicine? I can understand
    it better as a profit business venture, not as medicine.


    People do not kill you because you are protected by authority, but you
    should deserve at least jail to stop your wrongdoing.

    --
    "As surely as any soldier ever died on the field, Dr. Bates gave his
    life for a cause, battling against fate, during many years of
    magnificent struggle, when the unending disappointment finally broke in
    hopeless despair. His torch is still burning. There will come some other
    battler, who is fit, and will hold it high until the people who are
    sitting in darkness have seen its great light."
    William B. MacCracken, M.D.
    (1937, Berkeley CA)
     
    Rishigg, Jul 18, 2003
    #3
  4. BS

    BS Guest

    I've got an antireflective coating, so I suppose the ghosting would only be
    worse if I hadn't gotten it. I don't know the lens material, except that
    it's a high-index material. I'm not sure what questions to ask regarding the
    frame fitting. My impression is that my optician is careful and good at his
    work, so I'm inclined to doubt that there are any big problems with the
    frames.

    Bill and Mark, please advise re lens materials and frame details?
     
    BS, Jul 18, 2003
    #4
  5. BS

    Mark A Guest

    Based on your initial response, you have a 1.66 or 1.67 material. But what
    brand and model of lens do you have. Based on your Rx you posted they seem
    to be single vision (not progressive), but is that correct?

    I am not asking a question regarding the frame fitting, but proper fitting
    can affect the amount of apparent distortion. The lens must be properly
    placed in the frame and the frame must be properly adjusted on your face for
    good vision with an Rx that strong.
     
    Mark A, Jul 18, 2003
    #5
  6. BS

    BS Guest

    I don't know the brand or model. Is there an easy way to find out? Is there
    a particular brand/model of lens that gives better results at this strength?

    They're single vision, not progressive.
     
    BS, Jul 19, 2003
    #6
  7. BS

    Mark A Guest

    There are differences in brands and models and lens materials. Ask your
    optician where your bought them. If you bought them from a chain store, they
    may not tell you unless you ask them real hard. If so, tell us what chain
    store it was and what did they call them. this might be on your sales
    receipt.
     
    Mark A, Jul 19, 2003
    #7
  8. Look at a street sign and slightly raise the glasses. When reading
    raise the book to eye level. Note any changes in vision. Let me know.

    Robert Martellaro
    Optician/Owner
    Roberts Optical
     
    Robert Martellaro, Jul 19, 2003
    #8
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