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Proceedings Paper

Military target task performance after wavefront-guided (WFG) and wavefront-optimized (WFO) photorefractive keratectomy (PRK)
Author(s): Tana Maurer; Dawne Deaver; Christopher Howell; Steve Moyer; Oanh Nguyen; Greg Mueller; Denise Ryan; Rose K. Sia; Richard Stutzman; Joseph Pasternak; Kraig Bower
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Paper Abstract

Major decisions regarding life and death are routinely made on the modern battlefield, where visual function of the individual soldier can be of critical importance in the decision-making process. Glasses in the combat environment have considerable disadvantages: degradation of short term visual performance can occur as dust and sweat accumulate on lenses during a mission or patrol; long term visual performance can diminish as lenses become increasingly scratched and pitted; during periods of intense physical trauma, glasses can be knocked off the soldier’s face and lost or broken. Although refractive surgery offers certain benefits on the battlefield when compared to wearing glasses, it is not without potential disadvantages. As a byproduct of refractive surgery, elevated optical aberrations can be induced, causing decreases in contrast sensitivity and increases in the symptoms of glare, halos, and starbursts. Typically, these symptoms occur under low light level conditions, the same conditions under which most military operations are initiated. With the advent of wavefront aberrometry, we are now seeing correction not only of myopia and astigmatism but of other, smaller optical aberrations that can cause the above symptoms. In collaboration with the Warfighter Refractive Eye Surgery Program and Research Center (WRESP-RC) at Fort Belvoir and Walter Reed National Military Medical Center (WRNMMC), the overall objective of this study is to determine the impact of wavefront guided (WFG) versus wavefront-optimized (WFO) photorefractive keratectomy (PRK) on military task visual performance. Psychophysical perception testing was conducted before and after surgery to measure each participant’s performance regarding target detection and identification using thermal imagery. The results are presented here.

Paper Details

Date Published: 5 June 2014
PDF: 20 pages
Proc. SPIE 9112, Sensing Technologies for Global Health, Military Medicine, and Environmental Monitoring IV, 91120U (5 June 2014); doi: 10.1117/12.2050309
Show Author Affiliations
Tana Maurer, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Dawne Deaver, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Christopher Howell, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Steve Moyer, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Oanh Nguyen, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Greg Mueller, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Denise Ryan, Warfighter Refractive Surgery and Research Ctr. (United States)
Rose K. Sia, Fort Belvoir Community Hospital (United States)
Richard Stutzman, Walter Reed National Military Medical Ctr. (United States)
Joseph Pasternak, Walter Reed National Military Medical Ctr. (United States)
Kraig Bower, Johns Hopkins Univ. (United States)


Published in SPIE Proceedings Vol. 9112:
Sensing Technologies for Global Health, Military Medicine, and Environmental Monitoring IV
Šárka O. Southern; Mark A. Mentzer; Isaac Rodriguez-Chavez; Virginia E. Wotring, Editor(s)

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