Contrast Sensitivity of the Human Eye and Its Effects on Image Quality PDF Download
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Author: Peter G. J. Barten
Publisher: SPIE Press
ISBN: 9780819434968
Category : Mathematics
Languages : en
Pages : 236
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Book Description
This book examines the contrast sensitivity of the human visual system - concerning the eye's ability to distinguish objects from each other or from the background - and its effects on the imageforming process. The text provides equations for determining various aspects of contrast sensitivity, in addition to models that easily can be used for practical applications.
Author: Peter G. J. Barten
Publisher: SPIE Press
ISBN: 9780819434968
Category : Mathematics
Languages : en
Pages : 236
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Book Description
This book examines the contrast sensitivity of the human visual system - concerning the eye's ability to distinguish objects from each other or from the background - and its effects on the imageforming process. The text provides equations for determining various aspects of contrast sensitivity, in addition to models that easily can be used for practical applications.
Author: Fang Hou
Publisher: Frontiers Media SA
ISBN: 2889718832
Category : Science
Languages : en
Pages : 157
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN:
Category : Medical
Languages : en
Pages : 75
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Book Description
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.
Author: David F. Chang
Publisher: SLACK Incorporated
ISBN: 9781556428593
Category : Medical
Languages : en
Pages : 964
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Book Description
The IOL technical specifications, the clinical data, and the necessary clinical and surgical skills comprise the scientific foundation for achieving a "premium" refractive outcome. To consistently achieve patient satisfaction, however, requires mastering the art of patient and IOL selection, communicating and counseling effectively, and providing a "premium" patient experience. This is a nontraditional book in which multiple experts are separately asked to discuss controversial subjects in a reader-friendly format. There is balanced coverage of all of the available refractive IOLs, as well as those that may become available in the near future. A major emphasis is placed on avoiding and managing complications or potentially dissatisfied patients. There are more than 200 chapters that are organized into 14 major sections, over 300 images, 100 tables, and 12 sidebars that cover every aspect of refractive IOL clinical practice. This is a comprehensive educational resource addressing the most demanding and rapidly evolving area in cataract and refractive surgery today and the first book to cover both the clinical and nonclinical aspects of offering refractive IOL services.
Author: Myron Yanoff
Publisher: Elsevier Health Sciences
ISBN: 0323043321
Category : Medical
Languages : en
Pages : 1551
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Book Description
Based on feedback, the authors have streamlined their bestselling reference to zero in on just the clinical answers ophthalmologists need in day-to-day practice. This new edition presents unparalleled guidance on nearly every ophthalmic condition and procedure.
Author: William R. Hendee
Publisher: Springer Science & Business Media
ISBN: 1461218365
Category : Medical
Languages : en
Pages : 420
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Book Description
The presentation and interpretation of visual information is essential to almost every activity in human life and most endeavors of modern technology. This book examines the current status of what is known (and not known) about human vision, how human observers interpret visual data, and how to present such data to facilitate their interpretation and use. Written by experts who are able to cross disciplinary boundaries, the book provides an educational pathway through several models of human vision; describes how the visual response is analyzed and quantified; presents current theories of how the human visual response is interpreted; discusses the cognitive responses of human observers; and examines such applications as space exploration, manufacturing, surveillance, earth and air sciences, and medicine. The book is intended for everyone with an undergraduate-level background in science or engineering with an interest in visual science. This second edition has been brought up to date throughout and contains a new chapter on "Virtual reality and augmented reality in medicine."
Author: Pam Schnell
Publisher: Lippincott Williams & Wilkins
ISBN: 1975111451
Category : Medical
Languages : en
Pages : 1100
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Book Description
This second comprehensive edition of Visual Development, Diagnosis, and Treatment of the Pediatric Patient combines basic concepts of vision development with clinical diagnosis and treatment of vision disorders in infants, toddlers, children, and adolescents. Heavily updated, with new sections on timely issues and topics, the book is ideal for anyone who needs to know the practical aspects of evaluation and care of pediatric patients.
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: William Damon
Publisher: John Wiley & Sons
ISBN: 0470050543
Category : Psychology
Languages : en
Pages : 1072
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Book Description
Part of the authoritative four-volume reference that spans the entire field of child development and has set the standard against which all other scholarly references are compared. Updated and revised to reflect the new developments in the field, the Handbook of Child Psychology, Sixth Edition contains new chapters on such topics as spirituality, social understanding, and non-verbal communication. Volume 2: Cognition, Perception, and Language, edited by Deanna Kuhn, Columbia University, and Robert S. Siegler, Carnegie Mellon University, covers mechanisms of cognitive and perceptual development in language acquisition. It includes new chapters devoted to neural bases of cognition, motor development, grammar and langauge rules, information processing, and problem solving skills.
Author: Gretchen Beal Van Boemel
Publisher: CRC Press
ISBN: 1040142990
Category : Medical
Languages : en
Pages : 331
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Book Description
The Basic Bookshelf for Eyecare Professionals is a series that provides fundamental and advanced material with a clinical approach to clinicians and students. A special effort was made to include information needed for the certification exams in ophthalmic and optometric assisting, as well as for surgical assistants, opticians, plus low vision, and contact lens examiners. This book moves beyond basic exam skills into the arena of more advanced diagnostic testing. Topics include biometry and echography, electrophysiology, psychophysical testing, and microbiology. Special tests such as exophthalmometry, pachymetry, and ophthalmoscopy are also covered. This is the ultimate how-to book for those performing detailed patient exams.
