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    Mark, If you shorten the corridor, in a higher...

    Mark, If you shorten the corridor, in a higher add, you can reach a point where you effectively destroy the intermediate. Yes, wearing a 2.50 add now demonstrates the variety of manufacturer's...
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    Thank you Robert M. and yes you are correct. Many...

    Thank you Robert M. and yes you are correct. Many of the lenses that are optimized use the fitting height and B of the frame to deliver a corridor length that is manufacturer determined, not...
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    Just saw this post and thought I'd add 2 cents. ...

    Just saw this post and thought I'd add 2 cents.

    Freeform and digital surfacing are manufacturing methods that can accomplish a designers targets for their lenses. The levels of "freeform" that was...
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