Distance between the eyes should be measured in newborn infants if the eye spacing appears abnormal. The standard values for the newborn include: Arrow A. Outer canthal distance ranges from 5.2 to 7.3 cm (2 to 2.9 inches). Arrow B. Inner canthal distance ranges from 1.5 to 2.55 cm (0.6 to 1 inch). Arrow C. Interpupillary distance ranges from 3.25 to 4.5 cm (1.3 to 1.8 inches).
Modified from: Feingold M, Bossert WH. Normal values for selected physical parameters: an aid to syndrome delineation. Birth Defects Orig Artic Ser 1974; 10:1.
