Pro-Health Blog
By Angela | 11 August 2022 | 0 Comments

How Do I Measure My Pupillary Distance (PD)?

The eye doctor measures your PD during your eye test. Another time your eye doctor may measure your PD is when you place an order for prescription eyeglasses. Can you get your PD measured online? Unfortunately, no, but there are ways you can acquire information about your PD. What should you do if you are missing PD?

· Visit an eyeglasses store to get your PD measured.

· Contact the eyeglasses store you previously bought your prescription eyeglass from.

· Contact your previous eye doctor to see if they still may have your PD information in their records.

· Or you can try to measure your own PD.

If you are missing PD in the prescription, here are the steps you need to follow to know what your PD is:

Step 1: Place a ruler on the bridge of your nose and use a magnifying glass if you need to see the numbers more clearly.

Step 2: Close your left eye and line the "0" with the pupil’s center of the right eye.

Step 3: Do not move your head or the ruler, as you close your right eye and open your left eye. The ruler should line up with the pupil’s center of the left eye, and read it. This number stands for the distance PD in millimeters, thus giving you your distance PD.

Step 4: Repeat the entire process three times and try to be consistent when you do, as you do not want to be way off in your measurement. You have to make sure you do not move your head or the ruler as you measure your PD. If one of your eyes is weaker than the other eye, this process will be much more difficult for you to perform alone.

Step 5: When you are ordering glasses online, you need to enter the PD you got when you measured. If, you need to calculate your near PD subtract “three” from the number. For example, Your distance PD is 70 so when you subtract 3 from it, you receive 67.

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