Pupillary Distance (PD)?
|
Pupillary Distance is the distance between the centres of the pupils in each eye, measured in millimetre (mm). PD measurement is required in making your glasses. Most adults have a PD of 57 – 68 mm. In some cases, PD is represented in 2 numbers (for example, 31/31.5). They are the distances between the centre of your nose to each pupil centre. PD is often part of your prescription from your eye care professionals. |
| If PD is not filled out in your prescription, follow these steps to obtain the measurement: |
 |
| Enlist the help of a trusted friend and a ruler (mm: millimetre) • Look straight ahead • Place a ruler on the bridge of your nose • Measure the distance from the left pupil to right pupil (in mm) • Repeat the measurement 2 to 3 times to make sure that it is accurate |
|
|
