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Thread: Aniseikonia issue

  1. #1
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    Aniseikonia issue

    Hi everyone I have a patient with the following Rx:

    OD: -6.50/-4.00x12 VA 6/7.5
    OS: -5.00/-9.25x168.5 VA 6/9

    What is the best thing I can do to keep image size as similar as possible?
    I have already reduced vertex distance and measured vertical and horizontal centration accounting for pantoscopic tilt.

    Thanks in advance

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    Have you tried the Shaw lenses? Amazing results.

  3. #3
    One eye sees, the other feels. OptiBoard Gold Supporter
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    Quote Originally Posted by NESDO View Post
    Hi everyone I have a patient with the following Rx:

    OD: -6.50/-4.00x12 VA 6/7.5
    OS: -5.00/-9.25x168.5 VA 6/9

    What is the best thing I can do to keep image size as similar as possible?
    I have already reduced vertex distance and measured vertical and horizontal centration accounting for pantoscopic tilt.

    Thanks in advance
    Consider reducing the Lt cylinder. Losing a few letters on the 6/9 line might be a good compromise, compared to very complex, bulky, and costly lenses that might, or might not perform as well as modifying the Rx.

    Hope this helps,

    Robert Martellaro
    Roberts Optical Ltd.
    Wauwatosa Wi.
    www.roberts-optical.com
    ~~~~~~~~~~~~~~~~~~
    Science is a way of trying not to fool yourself. - Richard P. Feynman

  4. #4
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    I'm not so sure the Shaw lens would be a great option here. There really is no generalized (360) anisometropia in this case, and anything that Shaw controls is in all meridians..., except vertical prism, of course, but that you can do anyway...which is not likely to work anyway, right? because in primary gaze through the optical centers, you need no prism, but you may have a problem when they lookdown. (or up). (sorry for the run-on sentence here.)

    And it seems you are more concerned about how it looks...and the patient will want this too...and how shall I say, Shaw lenses are a bit...fugly.

    You haven't told us the age of this patient, or whether they are presbyopic, or whether they are used to a similar Rx from before.

    I tend to agree with the other poster that just cutting the OS cyl a bit might be your best solution since that eye is a bit more amblyopic anyway...but again, we don't know what the patient is habitually used to.

    I hope some prescriber is not just bumping up that OS cylinder by 2 or 3 diopters...because that will just not work.

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