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A member asked:
Optometry: i have a -3.75 distance vision prescription for progressive glasses. any difference between the optician measuring pd with a machine or without it?
3 doctors weighed in across 2 answers
Not really: Pd is pd. Some prefer a machine. Some prefer manually. As long as they get it right it doesn't matter.
Answered 3/31/2014
5k views
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No: There should not be much difference between the machine and manual measurements.
Answered 8/5/2013
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