TY - JOUR
T1 - Wavefront-guided versus wavefront-optimized photorefractive keratectomy
T2 - Visual and military task performance
AU - Ryan, Denise S.
AU - Sia, Rose K.
AU - Stutzman, Richard D.
AU - Pasternak, Joseph F.
AU - Howard, Robin S.
AU - Howell, Christopher L.
AU - Maurer, Tana
AU - Torres, Mark F.
AU - Bower, Kraig S.
N1 - Publisher Copyright:
© Association of Military Surgeons of the U.S. All rights reserved.
PY - 2017/1
Y1 - 2017/1
N2 - Purpose: To compare visual performance, marksmanship performance, and threshold target identification following wavefront-guided (WFG) versus wavefront-optimized (WFO) photorefractive keratectomy (PRK). Methods: In this prospective, randomized clinical trial, active duty U.S. military Soldiers, age 21 or over, electing to undergo PRK were randomized to undergo WFG (n = 27) or WFO (n = 27) PRK for myopia or myopic astigmatism. Binocular visual performance was assessed preoperatively and 1, 3, and 6 months postoperatively: Super Vision Test high contrast, Super Vision Test contrast sensitivity (CS), and 25% contrast acuity with night vision goggle filter. CS function was generated testing at five spatial frequencies. Marksmanship performance in low light conditions was evaluated in a firing tunnel. Target detection and identification performance was tested for probability of identification of varying target sets and probability of detection of humans in cluttered environments. Results: Visual performance, CS function, marksmanship, and threshold target identification demonstrated no statistically significant differences over time between the two treatments. Exploratory regression analysis of firing range tasks at 6 months showed no significant differences or correlations between procedures. Regression analysis of vehicle and handheld probability of identification showed a significant association with pretreatment performance. Conclusions: Both WFG and WFO PRK results translate to excellent and comparable visual and military performance.
AB - Purpose: To compare visual performance, marksmanship performance, and threshold target identification following wavefront-guided (WFG) versus wavefront-optimized (WFO) photorefractive keratectomy (PRK). Methods: In this prospective, randomized clinical trial, active duty U.S. military Soldiers, age 21 or over, electing to undergo PRK were randomized to undergo WFG (n = 27) or WFO (n = 27) PRK for myopia or myopic astigmatism. Binocular visual performance was assessed preoperatively and 1, 3, and 6 months postoperatively: Super Vision Test high contrast, Super Vision Test contrast sensitivity (CS), and 25% contrast acuity with night vision goggle filter. CS function was generated testing at five spatial frequencies. Marksmanship performance in low light conditions was evaluated in a firing tunnel. Target detection and identification performance was tested for probability of identification of varying target sets and probability of detection of humans in cluttered environments. Results: Visual performance, CS function, marksmanship, and threshold target identification demonstrated no statistically significant differences over time between the two treatments. Exploratory regression analysis of firing range tasks at 6 months showed no significant differences or correlations between procedures. Regression analysis of vehicle and handheld probability of identification showed a significant association with pretreatment performance. Conclusions: Both WFG and WFO PRK results translate to excellent and comparable visual and military performance.
UR - http://www.scopus.com/inward/record.url?scp=85008975710&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85008975710&partnerID=8YFLogxK
U2 - 10.7205/MILMED-D-15-00576
DO - 10.7205/MILMED-D-15-00576
M3 - Article
C2 - 28051986
AN - SCOPUS:85008975710
SN - 0026-4075
VL - 182
SP - e1636-e1644
JO - Military medicine
JF - Military medicine
IS - 1
ER -