Measuring Pupil Distance
You may be lucky, your PD may be noted on your prescription. If not you will need it measuring but when you next go for your eye test maybe ask them to measure it for you for.
Your measurement will normally be between between 60 and 65mm though it is not unheard of for a pupil distance to fall within 55 to 70mm.
If you are not confident you have the correct measurement you can send a pair of specs to us, and we can take the pupil distance from those, assuming they have been made accurately.
The measurement needed is that between the pupils when the eyes are gazing into the distance. If the eyes are looking at something close (including the person carrying out the measurement) the pupils will be slightly closer together.
We recommend the following method:
- Recruit a willing assistant.
- Face each other, stood or sitting so both parties are at a similar height.
- The subject being measured should look beyond the measurer, maybe over their shoulder, at a distant object, or one at least a few metres away.
- Depending on the eye colour, the easiest way to measure pupil distance will be to measure at the opposite edges of the pupil, or the iris as shown, with a millimetre rule placed against the forehead.
- Measure a few times to make sure you are seeing consistent results.