The pupillary distance is the distance between your pupils. This is measured in millimetres, and it might be indicated on your prescription as PD or far PD, though it is not always present on prescriptions in the UK. We need this measurement to ensure that your lenses will be perfect for you.
If your optician has provided you with a single number, simply divide this number in half to get your pupillary distance for your right side and left side.
If you cannot locate this information on your prescription, you can request the reading, or have your pupillary distance measured at any optician or just pop into any of our stores and we can easily take the measurement for you in a matter of minutes, and it is free.
Alternatively, below is an easy tool to measure your PD by yourself:
- Place a millimeter ruler on the bridge of your nose. Have a friend face you about arms length away.
- Have your friend measure the distance between the center of your pupils (the black dots in the middle of your eyes).
Or you can do it yourself simply by looking in the mirror. If you need your glasses on to do this, you can draw dots on the lenses where your pupils are (using a magic marker or highlighter); then take the glasses off and measure the distance between them. It's simple -- like playing connect the dots!
As a guideline:
Most adults' PD's are between 55-65.
Most kids' PD's are between 42-54.