What Is Your PD Value?

One the most important values on your Optician’s script is your PD or Pupillary Distance. This is the distance between the center of each eye. It is sometimes missing from your prescription details, so you may need to ask your Optician to supply it. The average Adult PD is around 65 when expressed as a single value, though sometimes it is listed with separate Right (OD) and Left (OS) values, for example Right (OD) 34 and Left (OS) 35.