Using diplopia as a warning of an inappropriate visual (ocular) accommodative response (WIVAR).

@article{Wolffsohn2001UsingDA,
  title={Using diplopia as a warning of an inappropriate visual (ocular) accommodative response (WIVAR).},
  author={James S Wolffsohn and Graham K. Edgar and Neville A. Mcbrien},
  journal={Aviation, space, and environmental medicine},
  year={2001},
  volume={72 7},
  pages={652-8}
}
BACKGROUND Over-accommodation, a tendency to focus at a distance closer than the desired distance, has been previously shown to occur when using a head-up display (HUD). METHODS A simple system was developed as a warning of an inappropriate visual accommodative response (WIVAR) during flight training. Two lines, which are seen as four low-contrast lines (physiological diplopia) if the user is focused in the distance due to the link between convergence and accommodation, are projected onto the… CONTINUE READING