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  1. Does D segment or round segment produce more jump?

    Started by Off, 01-08-2017 05:56 AM
    bifocals, jump, prismatic, round, segment
    • Replies: 2
    • Views: 5,011
    Last Post: 01-08-2017 03:11 PM
    by Steve Machol  Go to last post

    Forum:
    Ophthalmic Optics

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