Prism changed from one eye to the other

Discussion in 'Eye-Care' started by k9oxon, Aug 28, 2005.

  1. k9oxon

    k9oxon Guest

    Hi,

    For the last five years (3 checks) I have had a prism included in my
    prescription (1 OUT in the LEFT eye). I have just had another
    eye-check (18 months after last check) and my new prescription shows
    the prism in the RIGHT eye, 1 OUT. On querying this, I have been told
    that for small variations it does not matter which eyeglass has the
    prism.

    Is this a reasonable explanation? Also, as I always use my old glasses
    for occasional use, will the continuous swapping from right to left
    have any impact?

    Thank you for your views

    Regards Ron
     
    k9oxon, Aug 28, 2005
    #1
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  2. k9oxon

    k9oxon Guest

    Very clear and reassuring. Thanks Mike
     
    k9oxon, Aug 28, 2005
    #2
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  3. I slightly disagree, and tend to consider, in order of relative
    importance: If there is a strong dominancy, I tend to put the prism in
    the non-dominant eye. If there is a fixation disparity, I always ask
    if one eye's image is displaced more than the other. If so, I put it all
    in the deviating eye, if not, I split the prism equally between the two
    eyes. If one eye has better best corrected visual acuity, I will put
    all the prism in the less correctible eye. Finally, if one lens is
    stronger than the other, I tend to put the prism in the weaker lens,
    unless the prism will actually make either lens thinner.

    Other than those considerations, I agree it doesn't matter. Oh, except
    I would NEVER change the laterality of a prismatic correction without a
    reason to do so...

    w.stacy, o.d.
     
    William Stacy, Aug 29, 2005
    #3
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