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Optical Digital PD Meter Pupilometer Interpupillary Distance Tester CP-32C1
mpn: USS-EGE00088, ean: 0888107033790,
A pupilometer works by measuring the distance between the bridge of your nose where a pair of eyeglasses would rest and the center of each of your pupils. If a pupilometer is not used, the center of the lens may be in the wrong spot, and will cause t...
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