what is pulmonary distance
Pupillary Distance (PD) or interpupillary distance (IPD) is the distance (the industry standard is to measure in millimeters) between the centers of the pupils in each eye.This measurement is used when preparing to make prescription eyeglasses. Those are each the 5% of USA men at the far range and short range, respectively. 2  For adult females in the USA the figures are 64 and 53 mm (2.6 and 2.1 in). 3  For Europeans the figures are 1 mm smaller than the above. 4  The IPD is one of the many measurements used in anthropometry, measurements of the human body.