How to convert a BiFocal prescription to Single Vision (Near Vision only)?

Discussion in 'Eye-Care' started by Touch Tone Tommy, Dec 21, 2004.

  1. I'd like to order a pair of single vision glasses with only the near
    vision in them. Here's my current prescription:

    Sphere Cylinder Axis Add Prism PD
    O.D. -2.00 -4.25 097 1.25 Dist 63
    O.S. -2.00 -3.50 080 1.25 Near 60

    What do I need to order?

    Thanks in advance.
     
    Touch Tone Tommy, Dec 21, 2004
    #1
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  2. Touch Tone Tommy

    RM Guest

    Readers:

    OD: -0.75 - 4.25 X 97
    OS: -0.75 - 3.50 X 80

    This assumes your working distance for the reading glasses is the same as
    the reading distance your eye doctor used when he wrote the prescription.
    It probably is.


    --------

    "Touch Tone Tommy" <> wrote in message
    news:...
    > I'd like to order a pair of single vision glasses with only the near
    > vision in them. Here's my current prescription:
    >
    > Sphere Cylinder Axis Add Prism PD
    > O.D. -2.00 -4.25 097 1.25 Dist 63
    > O.S. -2.00 -3.50 080 1.25 Near 60
    >
    > What do I need to order?
    >
    > Thanks in advance.
    >
     
    RM, Dec 21, 2004
    #2
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  3. On Tue, 21 Dec 2004 05:07:56 GMT, "Mike Tyner" <>
    wrote:

    >
    >"Mike Tyner" wrote
    >
    >> But the calculation is simple - just sum together the Sphere and the Add
    >> to get -0.75. All else remains the same.

    >
    >Oops.. not exactly "all else". Don't confuse them by including the Add or
    >the far PD.
    >
    >-MT
    >
    >
    >



    Got it! Thanks, guys, for the help!!
     
    Touch Tone Tommy, Dec 21, 2004
    #3
  4. Touch Tone Tommy

    King Lo

    Joined:
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    hello there im having an hard time converting this bifocal prescription into an sv reading prescription here's the prescription R:+0.75-1.50 x 22; L:+0.75-1.75 x 172 with the add power of +2.25
     
    King Lo, Aug 7, 2017
    #4
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