Pupillary distance

Pupillary distance (PD), more correctly known as interpupillary distance (IPD) is the distance in millimeters between the centers of each pupil.[1]

  1. ^ Bogren HG, Franti CE, Wilmarth SS. Normal variations of the position of the eye in the orbit. Ophthalmology. 1986;93:1072–1077.
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