What is Interpupillary Distance or IPD?

Interpupillary distance or IPD means the distance between the center of your eyes. If you are using a VR or AR headset it is important to know the IPD because headsets can be adjusted to match your IPD so that you have a more comfortable and enhanced image quality experience.

Below is how to adjust the IPD on the Pico Neo 3.

Source: Pico Neo 3 User Guide