The Use Of Extended Wear Contact Lenses In The Aviation Environment An Army Wide Study
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The Use Of Extended Wear Contact Lenses In The Aviation Environment An Army Wide Study
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Author :
language : en
Publisher:
Release Date : 1992
The Use Of Extended Wear Contact Lenses In The Aviation Environment An Army Wide Study written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.
Standard refractive error correction options for the M-43 protective mask have proven to be incompatible with the Helmet Display Unit (HDU) component of the AH-64 Apache Integrated Helmet and Display Sighting System (IHADSS). Glue-on and outsert packages push the HDU, a Maxwellian- view virtual imaging system, far enough from the spectacle-, earing aviator's eye to significantly reduce the available field-of-view. Consequently, portions of critical peripheral instrumentation and weapon system overlays cannot be visualized. In November 1988, the U.S. Army Aeromedical Research Laboratory (USAARL) initiated the AH-64 contact lens research protocol to provide both an interim readiness fix and to develop a comprehensive database on contact lens wear in a variety of environments. The protocol was organized from three perspectives with concerns directed toward operational and flight safety, ocular health, and corneal physiology issues, and concluded at the end of September 1991. Fundamental operational and safety data were chronicled, along with written questionnaires, to assess subjective effectiveness of routine contact lens use. ocular health complications were collated from the aviation medicine, optometric, and ophthalmological communities. Clinical and physiological data were gathered by one USAARL optometrist, and two contract civilian optometrists and their supporting technicians.
Contact Lens Use Under Adverse Conditions
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Author : Working Group on Contact Lens Use Under Adverse Conditions
language : en
Publisher: National Academies Press
Release Date : 1990-01-01
Contact Lens Use Under Adverse Conditions written by Working Group on Contact Lens Use Under Adverse Conditions and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990-01-01 with Medical categories.
The Dtic Review
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Author :
language : en
Publisher:
Release Date : 1999
The Dtic Review written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Military engineering categories.
Aviation Space And Environmental Medicine
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Author :
language : en
Publisher:
Release Date : 1990
Aviation Space And Environmental Medicine written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Aviation medicine categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Resource Utilization And Development
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Author : Shri Kamal Sharma
language : en
Publisher: Northern Book Centre
Release Date : 1992
Resource Utilization And Development written by Shri Kamal Sharma and has been published by Northern Book Centre this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Conservation of natural resources categories.
The relationship between resources and development is the pivot around which the present study revolves. Focussing on the process of resource creation and utilization it emphasizes the need of equitable development integrating local needs, resources, people and functions. The resource exploitation and their utilization are two independent economic activities influenced by different algorithms and usually have manifested in core-periphery relationship. Reviews the persistent problems of economic development in perspective of exploitation of natural resources with the objective to provide some clues for occurrence and persistence of regional disparities and for suggesting a development model synchronising both the resource management and environmental protection.
Soft Hydrophilic Contact Lenses In U S Army Aviation An Investigative Study Of The Bausch And Lomb Soflens Trade Mark
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Author : John K. Crosley
language : en
Publisher:
Release Date : 1974
Soft Hydrophilic Contact Lenses In U S Army Aviation An Investigative Study Of The Bausch And Lomb Soflens Trade Mark written by John K. Crosley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with categories.
The use of standard acrylic or 'hard' contact lenses has been relatively unsuccessful in the military aviation environment, particularly when worn by personnel flying rotary wing aircraft. The purpose of this study was to evaluate the applicability of one type of hydrophilic lens to U.S. Army aviation. Nineteen volunteer helicopter pilots served as subjects and three specific areas were investigated. These were: clinical procedures, foreign body involvement, and the effect of extended (72 hours) continuous wear. The results indicate that the Soflens offers certain advantages over acrylic lenses for this specialized application. There were, however, distinct problems encountered which may be lessened with the introduction of new lens materials and asepticizing techniques. (Author).
The Use Of Bifocal Soft Contact Lenses In The Fort Rucker Aviation Environment
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Author :
language : en
Publisher:
Release Date : 1997
The Use Of Bifocal Soft Contact Lenses In The Fort Rucker Aviation Environment written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
There are problems with the compatibility of spectacles and certain helmet mounted electro-optical visual display systems. The incompatibility has been partially resolved with single vision contact lenses. However, these contact lenses have not helped senior aviators, who must wear bifocal glasses due to their presbyopia. The purpose of this study was to compare the performance of bifocal soft contact lenses with that of bifocal spectacle lenses to determine if contact lenses are an option for helping older aviators meet the visual requirements needed to fly military aircraft. Seventeen volunteer presbyopic aviators from Fort Rucker were fitted with five bifocal soft contact lens combinations and bifocal glasses. A four-phase investigation was conducted: a clinical phase involving the fitting of the bifocal contact lenses; a laboratory phase involving measurements of visual functions; a simulator phase involving measures of visual performance in simulated flight conditions; and an operational phase consisting of subjective responses regarding in-flight use of bifocal contact lenses. In general, vision in the best performing bifocal contact lenses typically was slightly reduced from vision in bifocal spectacles. The amount of the reduction, and whether it was clinically significant, depended on the refractive error of the subject (myopes generally performed better), the add group of the subject (low add group subjects performed better), and the type of bifocal contact lens. Aviators performed flight simulation maneuvers better in bifocal contact lenses than in bifocal glasses, and they evaluated their own ease of vision while performing aviation duties to be much easier in bifocal contact lenses than in bifocal glasses. In actual flight operations, each aviator preferred bifocal contact lenses over bifocal spectacles. Bifocal soft contact lenses are an acceptable.
United States Army Aviation Digest
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Author :
language : en
Publisher:
Release Date : 1989
United States Army Aviation Digest written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Aeronautics categories.
Helmet And Head Mounted Displays
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Author :
language : en
Publisher:
Release Date : 2002
Helmet And Head Mounted Displays written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Aeronautical instruments categories.