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.
PRINTABLE PD RULER
Print this page on A4 (without scaling, at 100%. )
Use the PD ruler at the bottom of the page.
Recommend to use a physical PD ruler or consult your ophthalmologist.
Download Zeelool’s PD ruler Note: Please Printed on A4.
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 accurate results.
step1. Position yourself arm’s length from your friend or yourself approximately 8 inches (20cm) away from a mirror.
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 the nose respectively to make sure that you have two PDs(OD & OS).
Notes:
1. For those requiring progressive lenses, we strongly recommend you get this information from your optician to ensure the accuracy of your glasses.
2. Your PD may be written in three ways:
▪ PD (OU), written as "64", means Binocular PD which is for both eyes.
▪ PD (OD), means the Monocular PD for the right eye, and PD (OS), means the Monocular PD for the left eye. A Monocular OD is written as two numbers, for example, "32/30", and "32" represents the PD for the right eye and "30" for the left eye.
▪ Sometimes PD is written as "62/59" or they are labeled "Far" and "Near". Your PD is usually measured for distance vision, which is "Far PD", or "62" in this example. For reading glasses, doctors measure your "Near PD" or "59" in the example.
Always enter your "Far PD" for distance vision eyeglasses and enter your "Near PD" for your reading glasses only. For most people, the difference between Far PD and Near PD is about 2-3mm.
Comments
2 comments
My PD isn't listed with the drop down menu. Can it be manually put in somewhere?
Same issue. PD isn't listed because it only goes to 41 on the individual PD's, but goes higher for only one PD. Do you not answer questions?
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