April 2009
Volume 50, Issue 13
Free
ARVO Annual Meeting Abstract  |   April 2009
Ocular Evaluation of Apache AH-64 Flyers Using the Forward Looking Infrared (FLIR) Camera: A 10 Year Follow-up Report
Author Affiliations & Notes
  • L. P. Cruysberg
    Ophthalmology, University Medical Centre Maastricht, Maastricht, The Netherlands
  • D. Roelofs
    Ophthalmology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
  • P. van Amerongen
    Centre for Man and Aviation, Soesterberg, The Netherlands
  • J. R. M. Cruysberg
    Ophthalmology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
  • Footnotes
    Commercial Relationships  L.P. Cruysberg, None; D. Roelofs, None; P. van Amerongen, None; J.R.M. Cruysberg, None.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science April 2009, Vol.50, 3828. doi:
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      L. P. Cruysberg, D. Roelofs, P. van Amerongen, J. R. M. Cruysberg; Ocular Evaluation of Apache AH-64 Flyers Using the Forward Looking Infrared (FLIR) Camera: A 10 Year Follow-up Report. Invest. Ophthalmol. Vis. Sci. 2009;50(13):3828.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose: : The purpose of this study is to identify ocular complaints and binocular disturbances in Apache AH-64 flyers using the forward looking infrared (FLIR) camera over a 10 year period.

Methods: : Retrospective, non-comparative interventional case series.

Results: : The average age of enrollment in the study was 30 years. The flyers were followed for an average of 8.0 years. The average of fly hours with the FLIR system was 377 hours. Visual acuity was 1.0 or higher in 96% at time of enrollment, and 100% at 10 years. Stereopsis was normal (mean, 80 seconds of arc). Accommodation power deteriorated on average by 0.235 D/year (SD±0.056). No significant exophoria was found. Color vision was unaffected by the use of the FLIR system. Common complaints using FLIR were generally short-lived and mild (0.5-1 hour), and included eye strain, temporary blurred vision, and the perception of a red-tan hue.

Conclusions: : Visual acuity and binocular functions were not affected by the use of the FLIR system. Accommodation decreased in the follow-up period as would be expected in the normal population. Visual complaints were generally of temporary nature.

Keywords: binocular vision/stereopsis • clinical (human) or epidemiologic studies: risk factor assessment • vision and action 
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