I recently started working with an Optronics 3B blocker and have noticed difficulties blocking high minus and polarized lenses. For some reason the layout grid seems to blackout with polarized lenses similar to when polarized lenses are 90 degrees apart. With high minus lenses only the center lensometer mark is visible with the outer pin marks non visible. Is there an adjust I'm missing to be able to see lensometer marks, seg or progressive marking on polarized lenses?
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