How to Measure Pupil Distance
Your pupil distance is an essential measurement for ordering prescription glasses; without it, your lenses won’t be accurate. This measurement is used to accurately determine the area of your lens that you look through to ensure that you have clear vision.
Your pupil distance, or PD, is the distance between the centre of your pupils (the black circles in the centre of your eye) and is always measured in millimetres for accuracy.
Typically, your optician will do this measurement. However, we have an excellent online tool that allows you to d