Changes

There are many depth cues, including motion parallax, ocular parallax, vergence of the eyes (the angle that the eyes make relative to each other), and accommodation of the eye (the focus of each eye).

There are many depth cues, including motion parallax, ocular parallax, vergence of the eyes (the angle that the eyes make relative to each other), and accommodation of the eye (the focus of each eye).

Most VR headsets only reproduce depth cues that happen due to binocular disparity. They operate at a fixed focal depth which means that accommodation of the eye is fixed and does not change. This results in a [[vergence-accommodation conflict]].

Most VR headsets only reproduce binocular disparity-related depth cues. They operate at a fixed focal depth which means that accommodation of the eye is fixed and does not change. This results in a [[vergence-accommodation conflict]].

Other depth cues include relative size, meaning that an object looks smaller the further away it is, and relative motion, meaning that objects that are further away tend to move more slowly.<ref>Vergence-Accommodation Conflict: Facebook Research Explains Why Varifocal Matters For Future VR. https://www.youtube.com/watch?v=YWA4gVibKJE</ref>

Other depth cues include relative size, meaning that an object looks smaller the further away it is, and relative motion, meaning that objects that are further away tend to move more slowly.<ref>Vergence-Accommodation Conflict: Facebook Research Explains Why Varifocal Matters For Future VR. https://www.youtube.com/watch?v=YWA4gVibKJE</ref>