How3

How to Measure Your Pupillary Distance(PD)?

What Is Pupillary Distance(PD)?

Pupillary Distance (PD) is the distance, in millimeters,
between the center of one pupil to the center of the other.
The PD is needed to manufacture your eyeglasses because it
determines the exact optical center of the lens,
which is the point where you look through the lens.Lorem Ipsum

Steps to measure your PD

Note: The average PD is between 54 and 78mm.
Might be a bit different compared to practical measurements.
Please measure your PD 2-3 times to ensure you get the accurate results.
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Step1

Position yourself arm’s length from your friend or yourself
approximately 8 inches (20cm) away from a mirror.
Please measure your PD 2-3 times to ensure
you get accurate results.
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Step2

Close your right eye and align the 0 mm over
the center of your left pupil.
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Step3

Close your left eye and note the reading
directly over your right pupil.
That will be your Total PD.
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Step4

You also need to measure the distance from
two pupils to the center of your
nose respectively to make sure that
if you have two PDs (OD & OS).