PD Measurement

Your pupillary distance is the measurement (in mm) between your pupils when you are looking at a distant object, this is sometimes also referred to as optical centres (OCs). Your optician will measure your PD as part of your eyetest but may not supply this information unless asked. If you don’t know your PD, you can return to your optician to have it measured. While it only takes a moment, it may be worth calling ahead of time to ensure that your optician is willing to measure it for free or a nominal fee.