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Is the PD accuracy the same with and without glasses?

Single PD value is always the same accuracy with or without glasses.

To explore Single PD accuracy : refer to this page


Monocular PD, displaying right and left value, have another processing.


Today monocular PD is slightly different with a common accuracy of 2mm.
Fittingbox is currently improving  the accuracy to provide the same level of accuracy for left and right value.