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Thread: Computer Glasses

  1. #1
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    Computer Glasses

    Looking for advice/example on prescription for computer glasses. Single vision prescription for using computer screen about 24 inches away.

    Regular prescription is:

    Sphere Cyl Axis NearAdd
    OD -5.00 -1.25 180 +1.25
    OS -4.25 -2.25 154 +1.25

    The Near Add is for bifocal, reading. So, for single vision reading glasses, I guess the Sphere would be OD -3.75, OS -3.00? But I assume reading is for more like 12 inches away? So for computer glasses, would it be closer to a +0.75? Like OD -4.25, OS -3.50?

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    Master OptiBoarder optical24/7's Avatar
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    pretty basic question for someone that works in this field.

  3. #3
    OptiBoard Professional Randle Tibbs, ABOM's Avatar
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    While it may be basic, if you are new to the field, welcome. First you need to know the distance your client is sitting from their computer. Have them measure that distance and from that you can calculate the power needed. Most likely, the reading distance is refracted for 40cm or 16 inches.

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    One eye sees, the other feels. OptiBoard Gold Supporter
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    Quote Originally Posted by Heim View Post
    Looking for advice/example on prescription for computer glasses. Single vision prescription for using computer screen about 24 inches away.

    Regular prescription is:

    Sphere Cyl Axis NearAdd
    OD -5.00 -1.25 180 +1.25
    OS -4.25 -2.25 154 +1.25

    The Near Add is for bifocal, reading. So, for single vision reading glasses, I guess the Sphere would be OD -3.75, OS -3.00? But I assume reading is for more like 12 inches away? So for computer glasses, would it be closer to a +0.75? Like OD -4.25, OS -3.50?
    There should be enough reserve accommodation to cover the 61cm/24" work distance, if the +1.25 add is for 40cm/16". In other words, concentrate on the distance and near- the intermediate will take care of itself.

    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

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    What's up? drk's Avatar
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    I love the smell of a do-it-yourselfer at Christmastime.

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    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 eyecare and eyewear needs! But vision and visual solutions can have thousands of correct as well as incorrect answers.


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