Prolonged microgravity exposure during long-duration spaceflight (LDSF) produces unusual physiologic and pathologic neuro-ophthalmic findings in astronauts. These microgravity-associated findings collectively define the Spaceflight Associated Neuro-ocular Syndrome (SANS). In this book, the editors compare and contrast prior published work on SANS by the National Aeronautics and Space Administration’s (NASA) Space Medicine Operations Division with retrospective and prospective studies from other research groups. The book describes the possible mechanisms and potential etiologies for SANS, and provides an update and review on the clinical manifestations of SANS including: unilateral and bilateral optic disc edema, globe flattening, choroidal and retinal folds, hyperopic refractive error shifts, and focal areas of ischemic retina (i.e., cotton wool spots). The ocular imaging findings (e.g., retinal nerve fiber layer, optic disc, and choroidal changes on optical coherence tomography) of SANS is also described, including the intraorbital and intracranial findings on orbital ultrasound and magnetic resonance imaging. The knowledge gaps for in-flight and terrestrial human research including potential countermeasures for future stud is also explored, including reports on the in-flight and terrestrial human and animal research being investigated by NASA and its partners to study SANS both prospectively and longitudinally and in preparation for future long duration manned missions to space including the moon, the asteroid belt, or Mars. We think this is a unique topic and hope that NASA and its research partners continue to study SANS in preparation for future longer duration manned space missions.
On May 4, 1993, Cuba asked the international health community and the World Health Organization (WHO) to find the cause of a mysterious epidemic of blindness that was spreading uncontrollably. Contradictory hypotheses confronted the team of scientists on this mission. Is the epidemic the result of a plot to topple Castro, as the Cubans believe? Or exposure to radioactivity or an unidentified nerve toxin accidentally released by the Russian Army withdrawing from Cuba?Cuban Blindness: Diary of a Mysterious Epidemic Neuropathy is a firsthand account of the epidemic of blindness and the hardships of life in Cuba at the time of the "special period" that followed the collapse of the Soviet Union and the tightening of the US embargo. Dr. Román—who was at the time Chief of Neuroepidemiology at the US National Institutes of Health—was a participant in this scientific mission and describes the neurological symptoms experienced by the victims of this epidemic disease, and narrates the epidemiologists’ detective work struggling to solve the mystery. This book combines neuroscience and scientific discovery with political intrigue, finally bringing the reader to the unexpected solution provided by a WWII survivor of Changi POW Camp in Singapore. Cuban Blindness: Diary of a Mysterious Epidemic Neuropathy is a description of the neuroepidemiological study undertaken to identify the cause of the epidemic neurological disease that affected Cuba in 1993-1994.
This selection of articles from the Encyclopedia of the Eye covering retina, optics/optic nerve and comparative topics constitutes the first reference for scientists, post docs, and graduate students with an interest beyond standard textbook materials. It covers the full spectrum of research on the retina - from the basic biochemistry of how nerve cells are created to information on neurotransmitters, comparisons of the structure and neuroscience of peripheral vision systems in different species, and all the way through to injury repair and other clinical applications.
This selection of articles from the Encyclopedia of the Eye is the first single-volume overview presenting articles on the function, biology, physiology, and pathology of the structures of the ocular periphery, as well as the related disorders and their treatment. The peripheral structures are implicated in a number of important diseases, including optic neuritis, thyroid eye disease, and strabismus. The volume offers a basic science background of these topics rather than a strictly clinical focus.
Glaucoma is one of the main causes of blindness throughout the world. It is characterized by death of the retinal ganglion cells, which is associated with loss of the axons making up the optic nerve. Recent studies have demonstrated support for the classification of glaucoma as a degenerative disease of the central nervous system (CNS), leading researchers to look at identifying neuroprotection strategies for the treatment of this disease, like those used for other degenerative diseases of the CNS. This book will provide an in-depth examination of the most recent findings regarding glaucoma, including risk factors, diagnosis, clinical monitoring, treatment, and above all, the need for treatment based on the concept of neuroprotection. A large part of the book is devoted to research related to this new approach to the treatment of glaucoma.
Eye-movement recording has become the method of choice in a wide variety of disciplines investigating how the mind and brain work. This volume brings together recent, high-quality eye-movement research from many different disciplines and, in doing so, presents a comprehensive overview of the state-of-the-art in eye-movement research. Sections include the history of eye-movement research, physiological and clinical studies of eye movements, transsaccadic integration, computational modelling of eye movements, reading, spoken language processing, attention and scene perception, and eye-movements in natural environments.
When we walk, drive a car, or fly an airplane, visual motion is used to control and guide our movement. Optic flow describes the characteristic pattern of visual motion that arises in these situations. This book is the first to take an in-depth look at the neuronal processing strategies that underlie the brain's ability to analyze and use optic flow for the control of self-motion. It does so in a variety of species which use optic flow in different behavioral contexts. The spectrum ranges from flying insects to birds, higher mammals and man. The contributions cover physiological and behavioral studies as well as computational models. Neuronal Processing of Optic Flow provides an authoritative and comprehensive overview of the current state of research on this topic written by a group of authors who have made essential contributions to shaping this field of research over the last ten years.
This volume contains selected and edited papers from the 7th European Conference on Eye Movements (ECEM 7) held in Durham, UK on August 31-September 3 1993. The volume is organized as follows:- Invited Lectures, Pursuit and Co-Ordination, Saccade and Fixation Control, Oculomotor Physiology, Clinical and Medical Aspects of Eye Movements, Eye Movements and Cognition, Eye Movements and Language and finally, Displays and Applications.
This timely new volume presents broad-based and wide-ranging contributions on all aspects of vision. The material is grouped for presentation in a logical fashion in five main themes: peripheral processing; sensory integration in superior colliculus; organization of visual projections; development and plasticity; and neuronal encoding and visually guided behavior.The material spans from molecules to cognition, including overt behavior, and synaptic and membrane levels of analysis. The species studied also range over diverse phyla, while contributors too form a diverse group representing Europe, North America, and Asia. The Visually Responsive Neuron is an exciting and informative addition to the well known Progress in Brain Research series.
Colour Atlas of Ophthalmology, Second Edition provides information pertinent to the fundamental aspects of ophthalmology. This book provides the correct diagnosis and treatment of many ocular disorders. Organized into 11 chapters, this edition begins with an overview of the process of assessment of a patient with eye disease, which includes taking a good history, examining the eyes with adequate illumination, and testing the visual function. This text then describes exophthalmos, which is the most common condition of the orbit and indicates the possibility of thyroid disease or a space-occupying lesion. Other chapters consider the common causes of ocular injuries, including injury from flying particles, sharp instruments, chemicals, and ocular injury associated with head injury. The final chapter deals with the common, therapeutic, and diagnostic ocular drugs. This book is a valuable resource for ophthalmologists, physicians, nurses, students, and all those paramedical personnel who have to deal with common eye disease.