Using the Peripheral Vision Horizon Display

The Peripheral Vision Horizon Display (PVHD) uses a laser to project a line parallel to the horizon on the instrument panel. This device, conceived by Dr. Richard Malcolm, reinforces spatial orientation subconsciously through peripheral vision.

At first, pilots find the display distracting. Eventually, pilots learn to ignore the line, but the subconscious orienting effect remains. Display interpretation is more natural in roll than in pitch.

Provisions for preventing disorientation through peripheral vision inputs should be considered for future aircraft. Other devices, such as a wide field of view HUD, may display peripheral cues more effectively.