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There are two major types of display: World fixed display and head-fixed display. A world fixed display exists in the world, like a laptop, a TV, or a smartphone. A head fixed display is mounted to the head, meaning when you turn your head it stays in front of your eyes. Head fixed displays include VR headsets and the google glass and vuzix devices.

There are two major types of display: World fixed display and head-fixed display. A world fixed display exists in the world, like a laptop, a TV, or a smartphone. A head fixed display is mounted to the head, meaning when you turn your head it stays in front of your eyes. Head fixed displays include VR headsets and the google glass and vuzix devices.

The most important features for a display to be useful are [[field of view]], contrast (both static and dynamic and in color), and focal depth.

The most important features for a display to be useful are [[field of view]], contrast (both static and dynamic and in color), and [[focal depth]] capability.

In 2D displays used in traditional computer systems, resolution is more important than focal depth.

In 2D displays used in traditional computer systems, resolution is more important than focal depth.