Abstract:
BACKGROUND:Army vision standards have varied little from Aviation's nominal birth. On the basis of classic Snellen acuity, we simply cannot predict threshold skill levels of any one individual(s). A growing number of Army Flight Surgeons, clinicians, and vision scientists have argued for the inclusion of contrast acuity metrics within flight physical standards. METHODS:Previous monitoring of operational contact lens utility in 223 Apache pilots, visual acuity data were gathered under two conditions: high illuminance; low illuminance combined with low contrast. Spectacle, contact lens, and aging influences were evaluated. RESULTS:The high-contrast Snellen acuities clustered at 20/15 and 20/20. Low-contrast acuities stretched from 20/25 to 20/125. LogMAR analysis highlighted statistical significance between the two acuity sets (p < 0.001) to an unanticipated data spread. The known underlying mechanisms possibly related to this effect are poorly documented; all such variables collectively explain <30% of the known variation in low-illuminance vision. DISCUSSION:Some pilots possessed the capacity to resolve 20/25 lettering under obfuscating conditions; others were adversely influenced by those same conditions. Snellen acuity involves target recognition; contrast acuity detects threshold differences; both aspects can be important. CONCLUSION:Prescreening under both vision assessment conditions will help identify and select superior vision performers. The validity and predictability of documenting this effect is targeted within planned future research efforts.
journal_name
Mil Medjournal_title
Military medicineauthors
Lattimore MRdoi
10.7205/MILMED-D-16-00208subject
Has Abstractpub_date
2017-03-01 00:00:00pages
234-238issue
S1eissn
0026-4075issn
1930-613Xjournal_volume
182pub_type
杂志文章abstract::There is a need for more work to understand the quality of life (QOL) outcomes of survivors of Operations Enduring Freedom and Iraqi Freedom combat injury to improve care and treatment, and prevent poor physical, psychological, and social outcomes. We describe the study design and methods of the Wounded Warrior Recove...
journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/MILMED-D-13-00444
更新日期:2014-03-01 00:00:00
abstract::Segmental bony defects in open fractures of the tibia are bridged with bone grafting, free vascularized fibular grafts, or an external ring fixator. A 33-year-old man sustained a gunshot injury to his left leg, resulting in Gustillo type IIIB open fractures of the tibia and fibula. The tibia had a segmental massive de...
journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/milmed.170.5.418
更新日期:2005-05-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.1093/milmed/usx049
更新日期:2018-05-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/MILMED-D-13-00299
更新日期:2014-02-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:
更新日期:1999-01-01 00:00:00
abstract:OBJECTIVES:To determine the outcomes scores of military patients who initially present with a variety of shoulder conditions, identify which scores demonstrate the highest correlation per diagnosis, and determine if a difference exists for patients who went onto surgery. METHODS:Two-hundred and seventy five consecutiv...
journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/milmed-d-11-00234
更新日期:2012-08-01 00:00:00
abstract::Post-traumatic stress disorder (PTSD) is associated with poor health but there is a gap between need and receipt of care. It is useful to understand where to optimally locate in-person care and where video-based PTSD care would be most useful to minimize access to care barriers, care outside the Veterans Affairs syste...
journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/MILMED-D-13-00177
更新日期:2014-02-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/milmed.171.5.404
更新日期:2006-05-01 00:00:00
abstract::A mathematical model revealing the relationships between bed capacity, average patient admission rate, average patient length of stay, utilization rate, and overfill rate in intensive care units is developed and explained. Mathematical model predictions are compared to predictions of two kinds of discrete event intens...
journal_title:Military medicine
pub_type: 杂志文章
doi:
更新日期:1995-05-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:
更新日期:2009-08-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:
更新日期:1992-10-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章,实务指引
doi:10.7205/MILMED-D-14-00113
更新日期:2014-12-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:
更新日期:2003-10-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/MILMED-D-14-00432
更新日期:2015-03-01 00:00:00
abstract::A number of long-distance running events are held each year in the United States; the Army Ten Miler (ATM) is one such race held annually in Washington, DC. The purpose of the present study was to retrospectively analyze medical encounters for runners participating in the ATM from 1998 to 2004. Of the estimated 91,750...
journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/milmed-d-11-00447
更新日期:2013-01-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/MILMED-D-12-00374
更新日期:2013-03-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/MILMED-D-16-00049
更新日期:2017-03-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/milmed-d-01-6208
更新日期:2009-07-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/milmed-d-09-00132
更新日期:2010-06-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:
更新日期:1999-01-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.1093/milmed/usz276
更新日期:2020-03-02 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/milmed-d-09-00282
更新日期:2010-06-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/milmed.169.4.282
更新日期:2004-04-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/MILMED-D-16-00096
更新日期:2017-03-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/MILMED-D-15-00381
更新日期:2016-05-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章,随机对照试验
doi:10.7205/milmed.171.1.80
更新日期:2006-01-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:
更新日期:1990-07-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.1093/milmed/usaa261
更新日期:2020-11-02 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/milmed-d-12-00249
更新日期:2012-12-01 00:00:00
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journal_title:Military medicine
pub_type: 杂志文章
doi:10.7205/milmed-d-11-00340
更新日期:2012-06-01 00:00:00