Neurology Of Vision And Visual Disorders

Neurology of Vision and Visual Disorders, Volume 178 in the Handbooks of Neurology series provides comprehensive summaries of recent research on the brain and nervous system. This volume reviews alterations in vision that stem from the retina to the cortex. Coverage includes content on vision and driving derived from the large amount of time devoted in clinics to determining who is safe to drive, along with research on the interplay between visual loss, attention and strategic compensations that may determine driving suitability. The title concludes with vision therapies and the evidence behind these approaches. Each chapter is co-written by a basic scientist collaborating with a clinician to provide a solid underpinning of the mechanisms behind the clinical syndromes. Reviews the neurological underpinnings of visual perception disorders Encompasses the cortex to the retina Covers functional organization, electrophysiology and subcortical visual pathways Discusses assessment, diagnosis and management of visual perception disorders Includes international experts from Australia, Canada, Denmark, Germany, Singapore, and the UK and US

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.

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.

Neurological Emergencies in Clinical Practice discusses neurological emergencies in a stepwise fashion including stabilizing the patient, identifying the cause, and treating the underlying cause. It is useful in several settings including the emergency room, hospital in-patient service as well as the intensive care unit. Neurological Emergencies in Clinical Practice has a wide appeal and relevance to disciplines including neurology, emergency medicine, critical care medicine, internal medicine and family medicine. Medical students and residents may use this convenient, pocket-sized book to prepare for and succeed in their training examinations and it is also useful for other house staff and practicing physicians.

A Harvard researcher investigates the human eye in this insightful account of what vision reveals about intelligence, learning, and the greatest mysteries of neuroscience. Spotting a face in a crowd is so easy, you take it for granted. But how you do it is one of science's great mysteries. And vision is involved with so much of everything your brain does. Explaining how it works reveals more than just how you see. In We Know It When We See It, Harvard neuroscientist Richard Masland tackles vital questions about how the brain processes information -- how it perceives, learns, and remembers -- through a careful study of the inner life of the eye. Covering everything from what happens when light hits your retina, to the increasingly sophisticated nerve nets that turn that light into knowledge, to what a computer algorithm must be able to do before it can be called truly "intelligent," We Know It When We See It is a profound yet approachable investigation into how our bodies make sense of the world.

In The Mind’s Eye, Oliver Sacks tells the stories of people who are able to navigate the world and communicate with others despite losing what many of us consider indispensable senses and abilities: the power of speech, the capacity to recognize faces, the sense of three-dimensional space, the ability to read, the sense of sight. For all of these people, the challenge is to adapt to a radically new way of being in the world. There is Lilian, a concert pianist who becomes unable to read music and is eventually unable even to recognize everyday objects, and Sue, a neurobiologist who has never seen in three dimensions, until she suddenly acquires stereoscopic vision in her fifties. There is Pat, who reinvents herself as a loving grandmother and active member of her community, despite the fact that she has aphasia and cannot utter a sentence, and Howard, a prolific novelist who must find a way to continue his life as a writer even after a stroke destroys his ability to read. And there is Dr. Sacks himself, who tells the story of his own eye cancer and the bizarre and disconcerting effects of losing vision to one side. Sacks explores some very strange paradoxes—people who can see perfectly well but cannot recognize their own children, and blind people who become hyper-visual or who navigate by “tongue vision.” He also considers more fundamental questions: How do we see? How do we think? How important is internal imagery—or vision, for that matter? Why is it that, although writing is only five thousand years old, humans have a universal, seemingly innate, potential for reading? The Mind’s Eye is a testament to the complexity of vision and the brain and to the power of creativity and adaptation. And it provides a whole new perspective on the power of language and communication, as we try to imagine what it is to see with another person’s eyes, or another person’s mind.

This thoroughly updated and extended edition covers the various cerebral visual disorders acquired after brain injury, as well as the rehabilitation techniques used to treat them. These are described within a brain plasticity framework, using data from single and group case studies along with follow up observation data. This original, tailor-made approach also includes the recording of eye movements for assessing scanning performance in scene perception and reading. The book gives a brief synopsis of the historical background on the subject, alongside an outline of intervention designs and methodological difficulties in the field, and goes on to discuss the mechanisms and processes that provide the foundations for recovery of function and successful adaptation in visually impaired patients. The author concludes by analyzing the importance of the procedures and outcomes of treatments to the reduction of patients’ visual handicaps. The new edition also contains an appendix with recommendations on the case histories, diagnostics and treatments. It is ideal reading for students in clinical neuropsychology, as well as professionals in the fields of neurology, visual neuroscience and rehabilitation experts.

The Neurology of Eye Movements provides clinicians with a synthesis of current scientific information that can be applied to the diagnosis and treatment of disorders of ocular motility. Basic scientists will also benefit from descriptions of how data from anatomical, electrophysiological, pharmacological, and imaging studies can be directly applied to the study of disease. By critically reviewing such basic studies, the authors build a conceptual framework that can be applied to the interpretation of abnormal ocular motor behavior at the bedside. These syntheses are summarized in displays, new figures, schematics and tables. Early chapters discuss the visual need and neural basis for each functional class of eye movements. Two large chapters deal with the evaluation of double vision and systematically evaluate how many disorders of the central nervous system affect eye movements. This edition has been extensively rewritten, and contains many new figures and an up-to-date section on the treatment of abnormal eye movements such as nystagmus. A major innovation has been the development of an option to read the book from a compact disc, make use of hypertext links (which bridge basic science to clinical issues), and view the major disorders of eye movements in over 60 video clips. This volume will provide pertinent, up-to-date information to neurologists, neuroscientists, ophthalmologists, visual scientists, otalaryngologists, optometrists, biomedical engineers, and psychologists.

About 4% of the world population has visual impairment or blindness. This book is aimed at addressing different causes of visual impairment and blindness, their epidemiology, manifestations, risk factors, prevention of progression, and treatment. It is aimed at encouraging physicians and researchers to increase efforts to prevent irreversible and treat reversible blindness for the betterment of the world. Therefore, it is essential to be fully aware and knowledgeable of the manifestations of the diseases causing blindness, and this book covers some of their different aspects. Each chapter was written by experts from around the globe. Thus, it reflects the importance of the subject.

Pediatric Neuroophthalmology details the diagnostic criteria, current concepts of pathogenesis, neuroradiological correlates, and clinical management of a large group of neuroophthalmic disorders that present in childhood. Surprisingly distinct from neuroophthalmic disorders afflicting adults, this set of diseases falls between the cracks of most ophthalmology training, and thus, warrants a practical, clinical guide for the practitioner in ophthalmology - the neuroophthalmologist, pediatric ophthalmologist, general ophthalmologist - as well as neurologists and for residents. The authors, leading pediatric ophthalmologists, have taken this difficult subject matter and developed an accessible, user-friendly manual with a detailed approach to the recognition, differential diagnosis, and management of pediatric neuroophthalmologic disorders.

The current leading cause of visual impairment among children is not a disease or condition of the eyes, but cortical visual impairment (CVI)-also known as cerebral visual impairment-in which visual dysfunction is caused by damage or injury to the brain. The definition, nature, and treatment of CVI are the focus of great concern and widespread debate, and this complex condition poses challenges to professionals and families seeking to support the growth and development of visually impaired children. On the basis of more than 30 years' experience in working with hundreds of children of all ages with CVI, Christine Roman-Lantzy has developed a set of unique assessment tools and systematic, targeted principles whose use has helped children learn to use their vision more effectively. This one-of-a-kind resource provides readers with both a conceptual framework with which to understand working with CVI and concrete strategies to apply directly in their work.

This thoroughly updated and extended edition covers the various cerebral visual disorders acquired after brain injury, as well as the rehabilitation techniques used to treat them. These are described within a brain plasticity framework, using data from single and group case studies along with follow up observation data. This original, tailor-made approach also includes the recording of eye movements for assessing scanning performance in scene perception and reading. The book gives a brief synopsis of the historical background on the subject, alongside an outline of intervention designs and methodological difficulties in the field, and goes on to discuss the mechanisms and processes that provide the foundations for recovery of function and successful adaptation in visually impaired patients. The author concludes by analyzing the importance of the procedures and outcomes of treatments to the reduction of patients’ visual handicaps. The new edition also contains an appendix with recommendations on the case histories, diagnostics and treatments. It is ideal reading for students in clinical neuropsychology, as well as professionals in the fields of neurology, visual neuroscience and rehabilitation experts.

A comprehensive review of visual impairment in children and possible solutions The rising number of cases in visual disorders during development, over the last decade, has strongly influenced approaches to diagnosis and rehabilitation. Moreover, the study of visual function has evolved not only within an ophthalmological, but also a neurodevelopmental framework: advances in our understanding of the maturation and plasticity of visual system functioning have further guided the progress of such approaches. As a result, the key importance of the developmental age is now widely acknowledged, from as early as the first months of life. This book provides an overview of the diagnosis and treatment of visual disorders in relation to advances in neurodevelopmental studies. The concept of early and multimodal management is discussed, with a focus on neuro-psycho-ophthalmological issues. The need for training courses aimed at updating semiological aspects and methodological and rehabilitative strategies is established, as being of significant value to clinical practice. 4 parts: General overviewCerebral visual impairments: from diagnosis to rehabilitationRehabilitation of visual impairmentsVisual disorders and neurological diseases

Teaches symptom-oriented approaches to the most common problems facing trainee neurologists, emphasising patient history and integrating evidence-based and experience-based strategies.

Cerebral visual disorders have far-reaching consequences for child development. These have profound adverse effects on children’s education and success in school and also in later life, but, unfortunately, cerebral visual disorders often remain undiagnosed and untreated in the pediatric population. This book provides a state-of-the-art account of what is known about the development and disorders of visual perception in children. It covers the development and disorders of visual perception in children, their assessment, early intervention and management in an interdisciplinary context, both from a scientific as well as clinical perspective. Case studies illustrate the recommended assessment and rehabilitation procedures; synopses, boxes and check-lists complement the presentation of our recommendations for clinical practice.

This book adopts a novel approach: procedures: instead of discussing the diagnostic categories of neurological syndromes, it focuses on the symptoms of common neurological presentations (especially in the emergency room or on the ward), and the diagnostic hypotheses that can be validated or rejected case by case as a result. Each chapter covers one of the main symptoms of emergencies in neurology – from transient consciousness disturbances to focal deficits, acute muscular disorders, respiratory insufficiency in neurological disorders, headaches, delirium, seizures and epileptic status, para-and tetraplegia, and head trauma, to acute functional disorders – and includes tables and figures to allow readers to gain a quick and easy, yet comprehensive overview of the topic. The book guides readers through various scenarios generated by the onset of symptoms, the clinical tools for differential diagnostics, and the principles of acute and post-acute phase therapy, managed by decision algorithms supported by the most recent scientific evidence. The resulting precedural profile – created through the collaboration of over 80 specialists in neurology or other disciplines – makes this text a valuable tool for neurologists, neurology residents and allied professionals in their daily clinical practice, as well as medical students.

This new edition of Leigh and Zee's The Neurology of Eye Movements is available as an enhanced edition for the first time. Your purchase of the print version includes access to the online version via Oxford Medicine Online. By activating your unique access code, you can discover more than 200videos, view and enlarge nearly 250 high resolution images, and annotate the work for future personal reference. The 5th edition of The Neurology of Eye Movements has two interrelated parts. The first comprises a modern synthesis of the anatomical, physiological, and pharmacological substrate for eye movements, including current views on the reflexive and voluntary control of gaze. This synthesis is based onelectrophysiological and inactivation studies in macaque, and behavioural studies in humans that incorporate functional imaging and transcranial magnetic stimulation (TMS) in normals, and clinicopathological studies in patients with neurological, visual, or vestibular disorders. Sophisticatedexperimental paradigms have been applied to both species to explore aspects of cognition, memory, volition, and reward. This large body of research has demonstrated the power of eye movements as experimental tools. The second part of the book applies this synthesis to the clinical and laboratoryevaluation of patients with abnormal eye movements due to a broad range of disorders - from muscular dystrophy, and genetic disorders, to dementia, including visual and vestibular conditions. By placing links to figures, tables, boxes, and videos, a synthesis of basic research and clinical findings is provided, that may shed new light on disease processes and provide insights on normal brain function.

This book discusses in detail the major advances in the field of neuro-ophthalmology. Based on the latest research from across the globe, it highlights recent developments in all areas of neuro-ophthalmology, including optic neuritis and the associated demyelinating diseases – especially the changing paradigms in the diagnosis and management of multiple sclerosis and neuromyelitis optica. It also covers the various types of hereditary optic neuropathies as well as nystagmus and its management. In order to provide comprehensive information in a single volume, it addresses topics of interest in pediatric neuro-ophthalmology, such as pediatric optic neuritis and cortical visual impairment, innovations in the management of ocular motility disorders and other disorders of the optic nerve and central nervous system, including ischemic neuropathies and idiopathic intracranial hypertension.This book provides a one-stop source of information on all key topics of neuro-ophthalmology, enabling trainee fellows and practitioners to keep abreast of the current thoughts in this field.As part of the series “Current Practices in Ophthalmology” this volume is intended for residents and fellows-in-training, as well as generalist and specialist ophthalmologists alike.