|Measuring Your Pupillary Distance (PD)
Pupillary Distance is the distance from
the center of the pupil (black circle) in one eye to the center of the pupil in
the other eye. This measurement is used to accurately center the lenses in the
frame that you have selected.
Place ruler (in mm) on the bridge of your nose.
Measure the distance between the centers of your pupils with your eyes
looking into the distance (This can be done using a mirror or by a
You can also
get this information from your doctor or from a licensed optician.
prescription should always have PD written in the first
Typical adult's Pupillary Distance measurements
(PDs) are from 54 to 66.
Typical children's Pupillary Distance measurements
(PDs) are from 41 to 55.
*It's critical for you to either get the PD
from your doctor or to measure your PD at home so that your prescription is
accurate. Without an accurate PD, you may find that your glasses may cause
blurring or headaches.*
my P.D. is written 66/63?
The first number is the P.D. number we
require to make your lenses. The second number (63) is the near pupil distance.
This number is only needed when reading glasses are required.