PD (Pupillary Distance)
Indicates the distance between your pupils, measured in millimeters, which helps ensure that your lenses are properly centered.
Binocular PD:
This is a single measurement that represents the distance between the centers of your pupils. It's recorded as one number (e.g., 44mm to 79mm).
Monocular PD:
This is the measurement for each eye, from the center of the nose to the center of each pupil. It's recorded as two numbers (e.g., 22mm/40mm for the right and left eye, respectively).
Measure your PD with our easy-to-use downloadable ruler.
If you need assistance with your entry, please contact customer service via chat, email, or phone.
