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Thread: Prescription for distance viewing

  1. #1
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    Prescription for distance viewing

    I do not see at a distance quite as clearly as I would like with my current prescription. I find that when I push the lenses of my glasses closer to my eyes (maybe about half an inch closer), I can see the lettering of street signs that are a block or two away more clearly than when I wear the glasses normally. Which ingredient or ingredients of the prescription, SPH, CYL or AXIS, are being affected when I press the lenses closer to my eyes? SPH? And in what direction? If 2.00 is added to SPH to get the prescription for reading glasses, would subtracting 1 from SPH make it possible to see letters on a street sign a little more clearly?

    The prescription:

    O.D. (right) SPH: -6.25 CYL: -0.75 x 15 (AXIS)
    O.S. (left) SPH: -4.00 CYL: -2.50 x 04 (AXIS)
    pd 64

    Thanks.

  2. #2
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    Distance

    P.S. I should make clear that I am not asking for a guess from afar about how the prescription should be revised. I just want to get a better understanding of what factor is being affected when I push the lenses closer to my eyes.

  3. #3
    Compulsive Truthteller OptiBoard Gold Supporter Uncle Fester's Avatar
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    You crave more minus which you get when you push them closer.

    Will you tolerate that over time is probably no, which is why you're refractionist backed it down.

    Add a number (pick one between one and a hundred) if you think that will help for an on line pair.

    Google Vertex Distance

  4. #4
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    Thanks for your reply. Why do you mean when you suggest that I would not tolerate more minus over time? Do you mean that I would have a physical problem, or that I would disconcerted by the affect on seeing closer objects, or something else? Also, by "more minus" are you referring to an increase in the SPH number, e.g., -7.25 instead of -6.25? Muchas gracias.
    Last edited by DavidM52; 11-04-2018 at 03:57 AM.

  5. #5
    Forever Liz's Dad Steve Machol's Avatar
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    As per the forum rules you agreed to when you registered:


    "This forum is for Eyecare Professionals. Consumers are not allowed to post on the Board, although they can read posts and search topics."


    All the professional Opticians on this site would love to help you solve your problems or answer your questions about your eye care and eye wear need! But vision and visual solutions can have thousands of correct as well as incorrect answers.


    We care about your vision and visual needs so strongly that we must advise you to seek a professional in the eye care field. Only with in-person evaluation can you truly get a proper diagnosis. You PD and powers are simply not enough information to give you any kind of advice other than speculation. We are sure that you want the best in eye care, as we want for you. Please seek out someone that you can discuss your issues with in person.


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