Changes in Visual Performance After Visual Work

Changes in Visual Performance After Visual Work
Author: James Deese
Publisher:
Total Pages: 30
Release: 1957
Genre: Psychophysiology
ISBN:

"This report critically reviews some of the experimental and field studies on the effects of prolonged visual work. It is pointed out in the report that there are two basically different kinds of visual work, one primarily involving search for infrequently occurring signals (vigilance tasks) and the other involving active continuous use of the oculomotor system and requiring more or less continuous mental operation (active tasks). The effects of work at these two types of tasks on the capacity for further visual work are different. Even relatively brief periods of time spent at visual vigilance results in a reduction in visual sensitivity. Relatively long periods of time at active tasks produce either no deterioration or very little deterioration in the capacity for further visual work unless the situation is complicated by extreme loss of sleep, anoxemia or presence of drug effects. Continuous work at active visual tasks, however, does produce depression, headaches, feelings of tiredness and irritability. Any attempt at reducing fatigue in active visual tasks should be directed towards these factors."--Abstract.

Emergent Techniques for Assessment of Visual Performance

Emergent Techniques for Assessment of Visual Performance
Author: National Research Council
Publisher: National Academies Press
Total Pages: 75
Release: 1985-01-01
Genre: Medical
ISBN:

Recent vision research has led to the emergence of new techniques that offer exciting potential for a more complete assessment of vision in clinical, industrial, and military settings. Emergent Techniques for Assessment of Visual Performance examines four areas of vision testing that offer potential for improved assessment of visual capability including: contrast sensitivity function, dark-focus of accommodation, dynamic visual acuity and dynamic depth tracking, and ambient and focal vision. In contrast to studies of accepted practices, this report focuses on emerging techniques that could help determine whether people have the vision necessary to do their jobs. In addition to examining some of these emerging techniques, the report identifies their usefulness in predicting performance on other visual and visual-motor tasks, and makes recommendations for future research. Emergent Techniques for Assessment of Visual Performance provides summary recommendations for research that will have significant value and policy implications for the next 5 to 10 years. The content and conclusions of this report can serve as a useful resource for those responsible for screening industrial and military visual function.

Visual Impairments

Visual Impairments
Author: National Research Council
Publisher: National Academies Press
Total Pages: 369
Release: 2002-08-17
Genre: Social Science
ISBN: 0309083486

When children and adults apply for disability benefits and claim that a visual impairment has limited their ability to function, the U.S. Social Security Administration (SSA) is required to determine their eligibility. To ensure that these determinations are made fairly and consistently, SSA has developed criteria for eligibility and a process for assessing each claimant against the criteria. Visual Impairments: Determining Eligibility for Social Security Benefits examines SSA's methods of determining disability for people with visual impairments, recommends changes that could be made now to improve the process and the outcomes, and identifies research needed to develop improved methods for the future. The report assesses tests of visual function, including visual acuity and visual fields whether visual impairments could be measured directly through visual task performance or other means of assessing disability. These other means include job analysis databases, which include information on the importance of vision to job tasks or skills, and measures of health-related quality of life, which take a person-centered approach to assessing visual function testing of infants and children, which differs in important ways from standard adult tests.

Webvision

Webvision
Author: Helga Kolb
Publisher:
Total Pages:
Release: 2007
Genre:
ISBN:

Making Eye Health a Population Health Imperative

Making Eye Health a Population Health Imperative
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
Total Pages: 587
Release: 2017-01-15
Genre: Medical
ISBN: 0309439981

The ability to see deeply affects how human beings perceive and interpret the world around them. For most people, eyesight is part of everyday communication, social activities, educational and professional pursuits, the care of others, and the maintenance of personal health, independence, and mobility. Functioning eyes and vision system can reduce an adult's risk of chronic health conditions, death, falls and injuries, social isolation, depression, and other psychological problems. In children, properly maintained eye and vision health contributes to a child's social development, academic achievement, and better health across the lifespan. The public generally recognizes its reliance on sight and fears its loss, but emphasis on eye and vision health, in general, has not been integrated into daily life to the same extent as other health promotion activities, such as teeth brushing; hand washing; physical and mental exercise; and various injury prevention behaviors. A larger population health approach is needed to engage a wide range of stakeholders in coordinated efforts that can sustain the scope of behavior change. The shaping of socioeconomic environments can eventually lead to new social norms that promote eye and vision health. Making Eye Health a Population Health Imperative: Vision for Tomorrow proposes a new population-centered framework to guide action and coordination among various, and sometimes competing, stakeholders in pursuit of improved eye and vision health and health equity in the United States. Building on the momentum of previous public health efforts, this report also introduces a model for action that highlights different levels of prevention activities across a range of stakeholders and provides specific examples of how population health strategies can be translated into cohesive areas for action at federal, state, and local levels.

Handbook of Visual Optics, Volume One

Handbook of Visual Optics, Volume One
Author: Pablo Artal
Publisher: CRC Press
Total Pages: 450
Release: 2017-02-17
Genre: Medical
ISBN: 1482237865

Handbook of Visual Optics offers an authoritative overview of encyclopedic knowledge in the field of physiological optics. It builds from fundamental concepts to the science and technology of instruments and practical procedures of vision correction, integrating expert knowledge from physics, medicine, biology, psychology, and engineering. The chapters comprehensively cover all aspects of modern study and practice, from optical principles and optics of the eye and retina to novel ophthalmic tools for imaging and visual testing, devices and techniques for visual correction, and the relationship between ocular optics and visual perception.

Evaluation of Human Work, 3rd Edition

Evaluation of Human Work, 3rd Edition
Author: John R. Wilson
Publisher: CRC Press
Total Pages: 1048
Release: 2005-04-04
Genre: Technology & Engineering
ISBN: 9781420055948

Completely revised and updated, Evaluation of Human Work is a compendium of ergonomics methods and techniques that is both broad and deep. The editors have once again brought together a team of world-renowned experts and created a forum for them to introduce their most valued techniques and methods. Almost every chapter has been revised and several new chapters have been added. See what’s new in the Third Edition: Sociotechnical design of work systems Team design and evaluation Learning from failures through a joint cognitive systems perspective The Analysis of organizational processes Techniques in user-centered design Increased understanding of the nature of knowledge and knowledge management in contemporary systems Environment surveys Systems for near miss reporting and analysis The one thing that has remained unchanged from the first and second editions is that this text is produced NOT as a cookbook of ergonomics methods. The editor places ergonomics methodology in context, and each chapter carefully describes the background to method development in that area and the application of methods and tools. Exploring the topic of ergonomics/human factors from a ‘doing it’ perspective, the book serves as a guide to what ergonomics can offer industry, business, or human service professionals and a reference for practicing ergonomists.

Visual ergonomics in the workplace

Visual ergonomics in the workplace
Author: Jeffrey Anshel
Publisher: CRC Press
Total Pages: 166
Release: 2002-09-11
Genre: Technology & Engineering
ISBN: 9780203483893

This easy-to-read introduction to the role of the visual system in the workplace is designed to help many professional ergonomists and human resources professionals to appreciate more fully the relationship between good vision and the efficiency and safety of job performance. It is an accessible account which is illustrated with both low level draw

Video Displays, Work, and Vision

Video Displays, Work, and Vision
Author: National Research Council
Publisher: National Academies Press
Total Pages: 288
Release: 1983-02-01
Genre: Medical
ISBN: 0309033888

Along with the widespread use of computers have come growing fears that working in front of video display terminals (VDTs) can irritate and even damage the eyes. Separating scientific fact from popular opinion, this report takes a critical look at the link between VDT use and eye discomfort and disease as well as at changes in visual performance and oculomotor function. Drawing on information from ergonomics, illuminating engineering, and industrial and organizational psychology, the report gives practical advice on optimal workstation design to improve the comfort, performance, and job satisfaction of VDT users.