Estimating your IPD in a mirror
You can estimate your IPD with a millimeter ruler and a mirror.
1. Stand directly in front of a mirror, and then hold the ruler up to your eyes. Make sure that
the ruler is level. If you're using a flexible ruler, make sure not to bend it.
2. Align the zero mark with the center of your pupil. You may need to close your other eye to
get a clear reading.
3. Check the millimeter mark on the other eye. You may need to close the first eye to get a
clear reading.
4. Make a note of your IPD measurement. You may want to recheck several times to make
sure your reading is accurate.
You can also ask a friend to help you measure your IPD instead of doing it by yourself with a
mirror. Make sure you're looking straight ahead while they measure.
19 Getting started