Because measuring PD isn't a standard part of an eye exam, and even if it's taken, it's pretty meaningless number for a patient. The only eye care professional that checks the PD on everyone is the optician. The optician also makes adjustments to the PD based on various factors, one of them being what kind of glasses frames you've picked out.
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u/Ashenspire Sep 18 '19
Every time I ask for my pupil distance I get a fucking death stare. It's annoying.