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> Opticians will often refuse to disclose pupillary distance, as a way to prevent their customer from purchasing elsewhere As I understand their logic is that
by Steve44 9y ago
> Opticians will often refuse to disclose pupillary distance, as a way to prevent their customer from purchasing elsewhere
As I understand their logic is that the PD is part of the fitting process for the glasses and not the optical prescription.
- walterbell 9y agoExcept that’s not true. PD varies by focal distance (far, near) and is unchanged by any frame. Perhaps they obtain frame measurements at the same time as they measure PD. But the machine is capable of measuring PD alone. Try another store/human.
- Steve44 9y agoOver 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/