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Measuring pupil distance
For us to make your spectacles as accurately as possible we need to know your pupil distance (PD) which is the distance between your eyes.
It is best to get this measurement from your Optician, however if necessary, you can measure it yourself.

You can measure your own PD using a mirror and a millimetre ruler.



1. Place the ruler flat against you forehead and with your right eye closed, line up the zero on the ruler with your left pupil centre.
2. Then with your left eye closed, take a reading of the ruler at your right pupil centre.

This gives your distance PD.

If you have difficulty seeing what you are doing, then use a magnifying mirror.

If it is easier, line up the outside of the iris of one eye with the inside of the iris of the other eye.

Your near PD is 3mm less than your distance PD, as your eyes move closer together when you read.

We need your distance PD if you are ordering distance or bifocal glasses and your near PD if you are ordering reading glasses.

If you do not supply your PD measurement, we will set distance optical centres at 65mm for men and 63mm for women.

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