PRINT THE RULER
Print this page at 100% size
using the NO SCALING setting.
1
100%
FOLD
Fold along the dotted line
at the bottom of the page.
2
CLOSE YOUR EYE
Close your right eye and
align the ruler’s zero to the
center of your left pupil.
4
READY. SET. MEASURE.
Try to not to move your head or the ruler. First open your right
eye and close your left eye. Look straight ahead and read the
millimeter line that matches up with the center of your right pupil.
This number represents your PD in millimeters.
5
MEASURE YOUR PUPILLARY DISTANCE
ZENNI
®
TIPS
▶ Measure this paper
against a ruler to assure
printout is accurate.
▶ Most adults have a PD
between 54 - 74mm.
▶ Most children have a PD
between 43 - 54mm.
▶ Take a few measure-
ments for consistency.
WHAT’S PD?
The Pupillary Distance (PD)
is the distance between the
pupils of the eyes, center to
center, in millimeters. A PD
should be provided as part
of your prescription. Read
more about Pupillary
Distance and how to read
your prescription on our
website by visiting:
zennioptical.com/measuring-pd
PD = 56
FOLD
FOLD
0 10 20 30 40 50 60 70 80
5 15 25 35 45 55 65 75
USING A MIRROR
USING A FRIEND
0 10 20 30 40 50 60 70 80
5 15 25 35 45 55 65 75
LOOK IN A MIRROR
OR FIND A FRIEND
Stand 8 in. (20 cm.) away from
a mirror or a friend. Place & hold
the PD ruler against your brow.
Keep your face straight.
3
(20 cm)
8 in
MIRROR
