Prevention:  This  section is now repeated at the bottom of every page.

The rare occurrence of the injury establishes that is difficult to create enough exposure to cause an injury. But when it does happen the consequences are serious, possibly fatal.

 Our personal experience was intermittent human traffic during eight-hour workdays for thirty calendar days.

If you have a tower CPU mount it under your desk. That's the way they position it in a cubicle. The hard drive busy light is about the height of your low peripheral vision if you put the tower on the desk. Desktop reading of text or writing notes beside the keyboard on the side of the monitor away from the tower makes the blinking hard drive busy light appear to approach from behind when you turn to view the screen again.

If you have a computer work station/desk in which you turn ninety degrees to write or do other non computer work, turn off the monitor when you turn aside. Remove screen savers in this instance. The movement, animation for example, in your screensaver, two-dimensional movement, might well be detected by your peripheral vision at close range. Alternately cover the monitor screen.

All home, apartment, or dorm computer workstations are in unprotected workspace. To change that put the computer in a quiet room with no possible movement. If that is not possible in a dorm or apartment position the computer so that your peripheral vision can see only stationary walls as you use the computer in a busy room. In Cubicles and 'Systems Furniture' these protective features are achieved with peripheral vision blocking panels and corner seating positions. It is called 'Cubicle Level Protection.'

If you use computer or CD-ROM games for many hours day after day, the game playing position should follow the same rules as the computer workstation. Battery operated games will not run long enough on a single rechargeable battery to cause a risk for SPVP.

Although a laptop does not have a visible blinking light in peripheral vision the same rules apply to your work position.  There should not be human traffic moving to you from behind. There should be nothing behind you, which could enter your subliminal peripheral vision field as you turn your head while working at the laptop and be mistaken for threat movement.

Only movement coming from behind you into your Subliminal Peripheral Vision can cause a peripheral vision reflex. If the movement source approaches you from ahead then enters your Subliminal Peripheral Vision from conscious sight there can be no peripheral vision reflex.

 

Repeated for Emphasis:

A single session or rare sessions will not cause this problem.

It is the same day after day long hours of play or computer use with detectable movement in ‘Subliminal Peripheral Vision,’ which would form the basis of a risk for SPVP injury.
Exposure can be cumulative

The brain’s detection system only evaluates movement. There is little recognition of the nature of the object in peripheral vision. If you have several hours exposure from human traffic at the library, while reading at an open table or seated in a reading room chair, followed by long hours watching TV with a critically misplaced ceiling fan sweeping detectable shadows around the room, the combination of those two behaviors might cause the problem. The suggestion is that either activity alone would not consume enough exposure time even if the critical movement is present.