Sometimes PD is written as “62/59” or they are labeled “Far” and “Near”. Your PD is usually measured for distance vision, which is ‘Far PD”, or “62” in this example. For reading glasses, doctors measure your “Near PD” or “59” in the example. Always enter your “Far PD” for distance vision eyeglasses and enter your ‘Near PD” for your reading glasses only. For most people, the difference between Far PD and Near PD is about 2-3mm.
Source: http://www.firmoo.com/pupillary-distance.html But in your case, you need to further verify with your doctor if 71 is the near PD or Far PD. This is crucial. -- Check us out at the oft-updated http://glassyeyes.blogspot.com! You received this message because you are subscribed to the Google Groups "GlassyEyes" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/glassyeyes?hl=en
