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How to Measure Pupillary Distance (PD)? | Rx-Able | We use Essilor prescription lenses, the best brand for the sharpest vision.
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Amazon.com: By Dr. Chi My PD Ruler. This is a Millimeter Ruler for Accurate Measurement Online Eye Glasses Adults and Children Slide Record Your PD, White Box, Red and Black Prints, 15x5x2.5cm,
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