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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
by Steve44 9y ago
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.
- walterbell 9y agoThis is what Lenscrafters (US) uses: http://www.uiwoptometryblog.org/2013/09/accufit/ http://www.uiwoptometryblog.org/2013/09/accufit/