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A comment on Why are glasses so expensive? The eyewear industry prefers to keep that blurry. Parent comment

Re:Why are glasses so expensive? The eyewear industry prefer... by LorenPechtel on Wednesday January 23, 2019 @02:36PM (#18981864)
I don't think the doctors normally measure the PD, they leave that to the ones who cut the glasses. That really does cause problems for doing it online, though.
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Re:Why are glasses so expensive? The eyewear industry prefer... by fencepost on Wednesday January 23, 2019 @06:27PM (#18984307)
PD is actually an automatic part of having that big mass of lenses up against your face and properly positioned for testing. If they don't have that adjusted properly you're not going to see much.
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