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Thread: Prism thinning

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    OptiBoard Novice Sveti15's Avatar
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    Prism thinning

    How do I measure prism thinning?
    Svetlana

  2. #2
    Compulsive Truthteller OptiBoard Gold Supporter Uncle Fester's Avatar
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    This thread should help. Also every optician should read the second thread about progressives and where the why it is done is discussed at the very end.

    It is as a rule of thumb about 2/3 of the add power base down on both lenses on plus lenses.

    https://www.optiboard.com/forums/showthread.php/28014-prism-thinning-an-invisible?highlight=measure+prism+thinning


    http://64.50.176.246/cecourse.php?ur...essive_lenses/
    Last edited by Uncle Fester; 04-24-2019 at 11:20 AM.

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