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Thread: High curve base on sunglasses

  1. #1
    OptiBoard Novice
    Join Date
    Aug 2018
    Optical Retail

    Lightbulb High curve base on sunglasses

    Hello everyone, I need little help.

    I have one sport sunglasses (axa angle of frame iz 28°), and the base of lens is 7. Dioptry is OD - 1.25 OS - 1.00

    I used a Nidek Le 9000sx and blocker CE-9. It's first time to I do that kind of glasses. Can I trace only the demo lens, or I must to trace frame?

    Can somebody teach me how to do that?

  2. #2
    Master OptiBoarder OptiBoard Gold Supporter
    OptiBoard Silver Supporter

    Join Date
    Mar 2012
    Dispensing Optician
    lean the frame so the right lens is parallel and trace the right lens, manually enter the DBL. I would practice a bit before cutting a real person's lens.

  3. #3
    OptiBoard Professional
    Join Date
    Jan 2017
    Dispensing Optician
    If the demo fits nice and securely in the frame, I will trace the demo lens. Sometimes they cut the demos on wrap frames slightly taller in the B measurement and narrower in the A, I assume to help prevent the lenses from slipping out of the top eyewire when the frame flexes outward. I've noticed this is fairly common after comparing the shapes of the demo vs. tracing the frame. If the demo fits poorly, dont use it.

    Definitely take Tallboys advice, and practice on some scrap lenses before messing up something expensive!

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