Your PD automatically adjusts during the day, as your eyes move between different viewing distances. Fortunately, when ordering glasses including progressive designs, only the distance PD is necessary as standard adjustments are made to accommodate for reading or computer vision.
Does interpupillary distance change with age?
Influence of age on interpupillary distance
A decrease of 0.6 mm and 0.4 mm (Viktorin’s and PD-5, respectively) occurred between the adults (26–40 years) and older adults (41–67 years).
Can your pupillary distance change as an adult?
Typically, the Pupillary Distance falls in a range between 54 and 65 mm. As children grow up, their PD keeps on changing but once they become adults, this value remains constant.