How do you properly/precisely check the base curve on a FT bifocal, progressive or aspheric lens using a lens clock. I have gotten mixed reviews and want to be accurate in my technique and results.
I have found that on a FT lens, I read with the pins horizontal just above the seg line.
On a progressive lens I have taken the higher of the vertical and horizontal measurements I have gotten. I use the same method for aspheric lenses.
Your insight is much appreciated.
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