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Hello everyone :), I am in prep for my boards, and have a few questions for my optician friends. My first question is, If measuring the distance between prism reference points in a pair of bifocals, is this point the distance between pd's?
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The PRP on most PAL's is exactly in between the two lazer 180 engravings. Use a PAL cut-out chart to locate. -
Thank you for the info on the progressives, but I was asking on a pair of bifocals :)Comment
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With segmented/or SV lenses you'll read the prism at the correct pupillary height/inset.Comment
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Yes. Transfer to the lenses...Originally posted by Cmp21 View Post
... positioned in the lensometer using the alignment marks on the lens stop.
Best regards,
Robert MartellaroScience is a way of trying not to fool yourself. - Richard P. Feynman
Experience is the hardest teacher. She gives the test before the lesson.
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