This is important, because early VR headsets (including prototypes of the oculus Rift) would make users feel motion sickness.
The oculus Rift essentially tricks your brain into believing what it sees is real.
Many people heard about the Rift for the first time on March 25 when oculus VR was purchased by the social network for $2 billion.
oculus oc·u·lus (ŏk'yə-ləs)
n. pl. oc·u·li (-lī')