
What Does PD mean?
Pupillary distance (PD) measures the distance between the centres of your pupils.
Why is it important?
This measurement is used to determine where you look through the lens of your glasses and should be as accurate as possible. The average adult’s PD is between 54-74 mm.
Where do I find my PD?
Your optometrist will usually measure your PD during an eye exam. If you can't find it you can give you optometrist a call who will be happy to provide it you.
But, if this somehow is forgotten or you aren’t sure its an accurate measurement, we can suggest two options to help you measure PD on your own.