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Finding your Pupillary Distance (PD) online

It's worth asking your optician for your pupillary distance but it is not a legal requirement for them to provide it and some opticians will refuse. Don't worry though it's a simple process to measure it.

The best way to measure your PD is using our Looking Glass software, all you need is a portrait photo holding a ruler or a portrait photo wearing glasses and you can easily find your PD.

  1. Upload a photo like one of the two below.
  2. Left click the center of each eye.
  3. Right click two points on the ruler, or the two corners of your glasses.
  4. Enter the distance between the two points and our software will calculate your PD for you.

Measuring your pd with Looking Glass      Measuring your pd manually

Measuring your PD manually

  1. Ask a friend to stand directly opposite on the same eye level.
  2. Position a ruler on your nose as in the diagram below.
  3. Measure the distance between the edge of one pupil and the same edge of the other.

That's all there is to it - the PD in the above example is 56mm.




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SpecsOnTheNet Ltd
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