Why Do I Have 2 Pupillary Distance Numbers?
Your Numbers the First Number, Which Is Always Higher, Is for Distance, and the Second Number, Which Is Always Lower, Is for Near-Vision Reading Only. Another...
Your Numbers
The first number, which is always higher, is for distance, and the second number, which is always lower, is for near-vision reading only. Another example is if your numbers are 34.5/33.5, then it means your PD was taken one eye at a time.
Can you have two PD numbers?
DUAL PD, or monocular PD, consists of two numbers and is the distance between the centers of each pupil to the bridge of the nose. Dual PD is usually written in the following notation: 32/30. The first number is always the right eye (OD) measurement, and the second number is the left eye (OS).
The PD, which stands for pupillary distance, is the distance between your pupils in millimeters. You have a Right Eye (OD) PD and a Left Eye (OS) PD, which can be different and are measured from the center of the nose to each eye independently.
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Does your PD have to be exact?
The pupillary distance measurement does not have to be 100% precise to be useful, as it can tolerate a fairly small error range. If you do measure your own pupillary distance, it is recommended that you try several attempts to be sure you get a fairly accurate measurement.
If the PD measured was 2mm off initially, by using a millimeter rule, the net cumulative error might be 4.5mm or more.
Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.
