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Author: Michael Wall
Publisher: Springer Science & Business Media
ISBN: 146138835X
Category : Medical
Languages : en
Pages : 235
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Book Description
Measurement of visual acuity has been the cornerstone of visual testing since Snellen began quantitating visual acuity using letter optotypes in the 1860s. Bjerrum in the 1880s brought sophistication and quantitation to the assessment of the visual field with tangent screen examination using differently sized and colored targets. Further advances in visual testing did not occur until the Goldmann perimeter and the Farnsworth Munsell 100 Hue test were introduced in the 1940s, permitting further refinement in the detection and quantitation of acquired visual loss. An explosion of interest in sensory visual function testing followed the demonstration by Quigley and his colleagues in 1982 that despite the loss of more than 40% of the axons in the optic nerve, Snellen acuity and kinetic perimetry remained normal. Much of this interest has focused on a search for more sensitive and disease-specific sensory visual tests. Previously, novel tests used to probe visual function remained in the province of the visual physiologist and psychophysicist. These tests are now being introduced by the ophthalmologist into clinical practice. Concomitantly, the mass production of microcomputers and other technical advances have made tests such as automated perimetry and visual evoked response testing affordable for most offices. The clinician is presently being inundated with a plethora of visual function tests that may require a knowledge of visual psychophysics and statistics to understand and interpret. The purpose of this book is to acquaint the clinician with these new tests so that they may be used to maximum benefit.
Author: Michael Wall
Publisher: Springer Science & Business Media
ISBN: 146138835X
Category : Medical
Languages : en
Pages : 235
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Book Description
Measurement of visual acuity has been the cornerstone of visual testing since Snellen began quantitating visual acuity using letter optotypes in the 1860s. Bjerrum in the 1880s brought sophistication and quantitation to the assessment of the visual field with tangent screen examination using differently sized and colored targets. Further advances in visual testing did not occur until the Goldmann perimeter and the Farnsworth Munsell 100 Hue test were introduced in the 1940s, permitting further refinement in the detection and quantitation of acquired visual loss. An explosion of interest in sensory visual function testing followed the demonstration by Quigley and his colleagues in 1982 that despite the loss of more than 40% of the axons in the optic nerve, Snellen acuity and kinetic perimetry remained normal. Much of this interest has focused on a search for more sensitive and disease-specific sensory visual tests. Previously, novel tests used to probe visual function remained in the province of the visual physiologist and psychophysicist. These tests are now being introduced by the ophthalmologist into clinical practice. Concomitantly, the mass production of microcomputers and other technical advances have made tests such as automated perimetry and visual evoked response testing affordable for most offices. The clinician is presently being inundated with a plethora of visual function tests that may require a knowledge of visual psychophysics and statistics to understand and interpret. The purpose of this book is to acquaint the clinician with these new tests so that they may be used to maximum benefit.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309083486
Category : Social Science
Languages : en
Pages : 369
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Book Description
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.
Author: Barbara Silverstone
Publisher: Oxford University Press
ISBN: 0195094891
Category : Reference
Languages : en
Pages : 1414
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Book Description
This comprehensive reference source is a state-of-the-art guide to the scientific, clinical, rehabilitative, and policy aspects of vision impairment and blindness. More than 100 original contributions from physicians, therapists, rehabilitation specialists, and policy makers cover everything from the basic science of vision and its diseases to assistive technologies, treatment, and care.
Author: National Library of Medicine (U.S.)
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1120
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Book Description
First multi-year cumulation covers six years: 1965-70.
Author: Timothy J. Martin
Publisher: McGraw Hill Professional
ISBN: 0071781870
Category : Medical
Languages : en
Pages : 362
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Book Description
Practical Neuro-Ophthalmology features a consistent, full-color presentation and content valuable to residents as well as clinicians. The book covers all major conditions in neuro-ophthalmology and is enriched by numerous photos and diagrams, outstanding organization, and single-voice authorship
Author: National Library of Medicine (U.S.)
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1128
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Book Description
Author: Michael Wall
Publisher: Kugler Publications
ISBN: 9789062991396
Category : Gardening
Languages : en
Pages : 502
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Book Description
Author: Seymour Wapner
Publisher: Springer Science & Business Media
ISBN: 9780306461927
Category : Architecture
Languages : en
Pages : 348
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Book Description
Following upon the Handbook of Japan-United States Environment-Behavior Research, published by Plenum in 1997, leading experts review the interrelationships among theory, problem, and method in environment-behavior research. The chapters focus on the philosophical and theoretical assumptions underlying current research and practice in the area and link those assumptions to specific substantive questions and methodologies
Author: Jonathan D. Trobe
Publisher: Oxford University Press
ISBN: 0198029721
Category : Medical
Languages : en
Pages : 487
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Book Description
The Neurology of Vision sets out the principles and information needed to understand and manage disorders of the visual pathways in the brain. The author divides vision into three components. The optical component addresses the eye's ability to properly focus light on the retina. The retinocortical component converts light into neural signals in the retina, transmitting them to the primary visual cortex. Finally, the integrative component converts this simple visual information into more complicated forms. The symptoms and signs, testing methods, and diseases of each part of the visual system are presented using this unique, structural component approach. A final chapter discusses the visual manifestations of psychiatric disturbances. The book is heavily illustrated with over 150 beautifully rendered line illustrations, 50 radiographic brain images, and 60 retinal photographs. Case studies with teaching questions are also included, to further the reader's knowledge and test understanding.
Author:
Publisher:
ISBN:
Category : People with visual disabilities
Languages : en
Pages : 728
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Book Description
