Pupillary distance (PD) measures the distance between the centers of your pupils. This measurement is used to determine where you look through the lens of your glasses and should be as accurate as possible. The average adult's PD is between 54-74 mm; kids' are between 43-58 mm.
Follow the instruction below to measure your PD, take the accurate numbers and insert them on the prescription section when placing your order.

PD Measurer

Pupillary Distance & Segement Height Measurement


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Adjust the red line width to the card magnetic tape:

Rotate the red line in case your photo is diagonal: