Visual Impairment, 

Автор: Barrie Jay
Название: Detection and Measurement of Visual Impairment in Pre-Verbal Children
ISBN: 9401083932 ISBN-13(EAN): 9789401083935
Издательство: Springer
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Цена: 81050.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Proceedings of a workshop held at the Institute of Ophthalmology, London, April 1-3, 1985, sponsored by the Commission of the European Communities as advised by the Committee on Medical Research

Автор: Hargens Alan R Et Al
Название: Intracranial Pressure And Its Effect On Vision In Space And On Earth: Vision Impairment In Space
ISBN: 9814667102 ISBN-13(EAN): 9789814667104
Издательство: World Scientific Publishing
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Цена: 119330.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Fluid distribution during spaceflight and impact on brain and vision health is an emerging field of high-priority research in the NASA human space program. International Space Station astronauts have developed ocular refraction changes during prolonged spaceflight. Within this book, experts review current data related to fluid shifts during microgravity exposure and the impact of fluid shifts on astronaut health.This work also compares current astronaut health problems with Earth-based health conditions such as elevated intracranial pressure and glaucoma. Chapters include discussion of altered fluid distribution, including intracellular and extracellular fluid shifts, eye morphology and vision disturbances, and intraocular pressure. In addition, chapters will include a discussion of advanced non-invasive technologies to investigate the abovementioned fluid volume and pressure variables.As such, the book aims to bridge health professionals, researchers, and science professionals by a presentation of ophthalmology topics critical to future human space exploration, thus providing new perspectives to solve emerging brain and eye disease on Earth and in Space.

Автор: Seedhouse, Erik
Название: Microgravity and vision impairments in astronauts
ISBN: 3319178695 ISBN-13(EAN): 9783319178691
Издательство: Springer
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Цена: 51230.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Recent missions on board the International Space Station have revealed previously unreported physiological consequences of long duration space flight, particularly in eyesight, and in this Brief Dr. Seedhouse reviews the existing theories on what causes this degeneration and how long it will last. Notably, 60% of long-duration crews have reported subjective degradation in vision, a clear indication that further study is necessary before astronauts embark on even longer-term space missions. Decreased near-visual acuity was reported in 46% of ISS/Mir crewmembers, resulting in a change of up to 2 dioptres in their refractive correction. It is possible that ophthalmic changes have been present since the first days of spaceflight, but had been attributed to other causes; this approach to the issue as well as other hypotheses are all presented in full to give a broad foundation of the existing knowledge on the topic.  The changes have occurred at various times during a mission with varying degrees of visual degradation. Some cases resolved on return to Earth, but several crewmembers have not regained pre-flight visual acuity, indicating the damage may be permanent. One explanation of the syndrome has been attributed to hyperopic shift due to aging, but onboard analysis techniques, including visual acuity assessments, retinal imagery, and ultrasound examination of the eye, has led to the acceptance of a wider syndrome. In addition to vision changes, studies have reported flattening of the globe, swelling of the optic disc (papilledema), choroidal folds in the retina, swelling of the optic nerve sheath, and visual field defects. It is widely hypothesized that this spectrum of symptoms may be explained by an elevation of intracranial pressure (ICP). Establishing the provenance of this medical problem, monitoring its occurrence and resolving the symptoms for future long term space missions is a key challenge for space medicine. With this book, readers have an entry point for understanding the full scope of the problem and its possible origins.

Автор: Lueck Amanda Hall, Dutton Gordon N.
Название: Vision and the Brain: Understanding Cerebral Visual Impairment in Children
ISBN: 089128639X ISBN-13(EAN): 9780891286394
Издательство: Неизвестно
Цена: 125490.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This text examines how attempts by Congress to reassert its will in the wake of Watergate ultimately resulted in further surrender of legislative power to the presidency.