Before placing your order, you need to know your pupillary distance (PD). This measurement is the distance between the pupils of your eyes is needed to correctly center the lenses within the frame.
Although your PD is often measured by your eye doctor during your exam, PD measurements are not always listed on your prescription but, no worries, it’s easy enough to obtain using a ruler and a mirror.
Adults generally have a PD within 55-70 mm, while children have a PD within 40-55 mm.
- Print this page to obtain millimeter ruler below.
- Hold a ruler against your brow
- Align the ruler’s 0 mm mark with the center of the left pupil
- The millimeter line that aligns with the center of the right pupil is the PD
