Visual Fields Via The Visual Pathway

This textbook is a dynamic exploration of the relationship between the visual pathway and visual field impairments. Aimed at the practitioner or student of visual fields, the clinical focus of the book is oriented towards differential diagnosis and will assist the reader in identifying the site of a lesion. The emphasis is on detection and interpretation of visual field defects, rather than the background and psychophysics of visual field assessment. Discussion of the normal visual field is included for comparative purposes. The structure of the book traces the visual pathway anatomically from front to back, and is supplemented by information on methodology and programme choice.

This book is a basic reference guide on the anatomy of the visual pathway, the layout/topography of the nerve fibers throughout the visual pathway, typical lesions affecting each part of the visual pathway, the visual field defects to be expected at each level, and the associated signs and symptoms (ocular and general) at each level of the visual pathway. It includes examples of visual field results enhanced by illustrative photographs and brain scans as appropriate to each part of the visual pathway and pathology. Also included are sections on differential diagnose and artefacts of testing. New features to this edition include updated methods of visual field assessment, additional descriptions of how individual visual field results should be interpreted, an updated review of the pros and cons of the various available test programs, and in each chapter a discussion of recent research advances and recommendations on baseline assessment, diagnosis, and re-assessment options to promote good clinical practice decisions.

Eye Essentials is a new series of texts which provides authoritative and accessible information for all eye care professionals, whether in training or in practice. Each pocket guide is both a rapid review tool for students and a handy clinical reference guide for practitioners. With features such as tables, key bullet points, clinical pearls, practice pitfalls, summaries, action icons and stunning full color illustrations, this series has rapidly established itself as an excellent source of essential information for today's readers. Practical guidance that is evidence basedFull-color illustrations clarify key informationHighlighted advice sections for patients and handy tables throughoutAuthoritative guidance on visual fields from a respected leader in the fieldProvides essential information in one convenient review source

Visual Fields: Examination and Interpretation, 3rd edition contains revisions and updates of earlier material as well as a discussion of newer techniques for assessing visual field disorders. The book begins with a short history of the field of perimetry and goes on to present basic clinical aspects of examination and diagnosis of visual field defects in the optic nerve, optic disc, chorioretina, optic chiasm, optic tract, lateral geniculate field bodies, and the calcarine complex. Additional aspects of visual field examination are explored including those of monocular, binocular, and junctional field defects, congruity vs. incongruity, macular sparing vs. macular splitting, density, wedge-shaped homonymous field loss, and monocular temporal crescent. Various new techniques of automated perimetry are also considered including SITA, FASTPAC, and SWAP. This volume provides a very useful overview of the techniques of visual field examination in a number of eye disorders and will be of interest to all ophthalmologists, neuro-opthalmologists, retina specialists, and optometrists.

This book covers interpretation of visual fields by Humphrey and Octopus perimeters and discussion of Humphrey visual fields in a variety of ocular disorders.It examines dilemmas faced by an ophthalmologist while evaluating visual fields which do not match with the clinical picture. Glaucoma, the commonest condition for visual field investigation is discussed in detail. Logical reasoningfor incorporating perimetry in glaucoma management with a clear understanding of the challenges in its interpretation is delved into. The book progresses to advanced glaucoma and glaucoma progression. It discusses a systematic evaluation of various parts of the visual field so that the reader can make a calculated management plan for their patient. Each chapter attempts to clearly enunciate factors that help in the diagnosis and features which may be confused with other conditions. Fields which help diagnosing early, advanced glaucoma and glaucoma progression with images and methods of ensuring reasonable diagnostic accuracy are included. The book incorporates separate chapters on ocular conditions which also mimic visual field defects of glaucoma with detailed modes of correct diagnosis, diagnostic dilemmas arising from retinal, macular, vascular, visual pathway lesions mimicking visual field defects of glaucoma or while coexisting with glaucoma, supported by algorithms to achieve a quick diagnosis in a busy OPD without missing the clinical findings and by using minimal investigative modalities. This book helps clinicians to prevent over diagnosis or under diagnosis of glaucoma and helps diagnose cases with morbidities causing visual field defects.

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.

A case-based teaching tool describing real-life cases of neuro-ophthalmic disorders. Bridges the gap between textbook information and everyday clinical practice.

Unique case-based guide to generating diagnostic possibilities based on the patients' symptoms. Invaluable for psychiatrists and neurologists.