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A comment on A Closer Look at the $13B Premium Eyewear Market. Parent comment

Re:A Closer Look at the $13B Premium Eyewear Market by Steve44 on Monday October 09, 2017 @11:41AM (#15434787)
Over the years I've been to several opticians and they all measure the PD with a special looking ruler as part of the frame fitting measurements.

I don't doubt that it could be measured as part of the optical prescription process but it isn't as far as I've seen. I'm in the UK.

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Re:A Closer Look at the $13B Premium Eyewear Market by walterbell on Monday October 09, 2017 @11:57AM (#15434950)
This is what Lenscrafters (US) uses: http://www.uiwoptometryblog.org/2013/09/accufit/
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