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Pupillary Distance (PD) is the measurement in millimeters between the centers of your pupils. It’s essential for properly aligning the lenses with your eyes, ensuring clear and comfortable vision. If this number wasn’t provided on your prescription by an eye care professional, you can measure it yourself at home.
Print this pdf file without scaling, at 100%. Double-check scale By measuring against a standard mm ruler, or the credit card diagram below. Use PD ruler at the bottom of the page.
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.
Step 1
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.
Step2
Close your right eye and align the 0 mm over the center of your left pupil.
Step3
Close your left eye and note the reading directly over your right pupil. That will be your Total PD.
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).
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