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Thread: minimise prismatic effect

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    minimise prismatic effect

    A spectacle of +5.00DS with a BVD of 12 mm and distance PD of 65 mm. Calculate what distance to OCs should be set to minimise prismatic effect??

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    Master OptiBoarder OptiBoard Silver Supporter rdcoach5's Avatar
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    How can an OD even be asking such a question ?

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    OptiBoard Apprentice JGor's Avatar
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    The question makes no sense. There isn't enough information.

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    Master OptiBoarder OptiBoard Silver Supporter lensmanmd's Avatar
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    Yup. Best thing is to find a 49/16 that fits on center, a compensated FF lens and it would be a moot point.

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