Changes

'''Head-mounted display''' or '''HMD''' is a [[device]] worn over your head. It features a display in front of one or both of your eyes. The display streams data, images and other information in front of the wearer's eye(s). Certain HMDs such as [[Oculus Rift]] or [[HTC Vive]] have displays over both of their users' eyes. Others like [[Google Glass]] only have a display over one of the users' eyes.

==Virtual Reality HMDs==

Head movement → Tracker → CPU → GPU → Display → Photons → Optics → Eyes

===Features===