IPD

What is IPD?

Interpupillary Distance

Interpupillary Distance (IPD) measures the space between a user's pupils, a critical factor in headset design that ensures proper scale perception and comfortable stereoscopic viewing when correctly matched through adjustable lenses.

How does Interpupillary Distance (IPD) work?

This fundamental biometric measurement varies significantly between individuals and directly impacts how users perceive scale, depth, and comfort in immersive environments. When developing for multiple platforms, consideration of IPD adjustment capabilities becomes essential, as mismatched IPD settings can cause visual discomfort, eye strain, and incorrect scale perception that undermines the immersive experience.

How is Interpupillary Distance (IPD) used?

Many headsets provide physical or software-based IPD adjustment systems, allowing users to customize their viewing experience. Developers should incorporate IPD considerations into their testing protocols to ensure comfortable viewing across diverse user populations and optimize stereoscopic rendering accordingly.