Visual Problems Of Space Travel PDF Download
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Author | : Andrew G. Lee |
Publisher | : Academic Press |
Total Pages | : 242 |
Release | : 2022-07-16 |
Genre | : Medical |
ISBN | : 0323915256 |
Download Spaceflight Associated Neuro-Ocular Syndrome Book in PDF, ePub and Kindle
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. Written in an easy-to-read manner, the book adopts a translational approach and explores the science and the clinical manifestations of Space flight associated neuro-ocular syndrome. It is also multi-disciplinary and suitable for both clinicians and researchers in ophthalmology, neurology, and aerospace medicine interested in SANS SANS is a unique space flight disorder that has no terrestrial equivalent. The book involves contributions from international experts across multiple disciplines to tackle the problem of SANS Summarizes and reviews the current findings of SANS, including possible mechanisms and potential etiologies, clinical manifestations, current reports on the in-flight and terrestrial human and animal research, and ocular imaging findings
Author | : Brandon R. Macias |
Publisher | : World Scientific Publishing Company |
Total Pages | : 291 |
Release | : 2017 |
Genre | : Medical |
ISBN | : 9789814667104 |
Download Intracranial Pressure and Its Effect on Vision in Space and on Earth Book in PDF, ePub and Kindle
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.
Author | : Erik Seedhouse |
Publisher | : |
Total Pages | : |
Release | : 2015 |
Genre | : |
ISBN | : 9783319178714 |
Download Microgravity and Vision Impairments in Astronauts Book in PDF, ePub and Kindle
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.
Author | : Armed Forces-NRC Vision Committee |
Publisher | : National Academies |
Total Pages | : 68 |
Release | : 1962 |
Genre | : Space flight |
ISBN | : |
Download Visual Problems of Space Travel Book in PDF, ePub and Kindle
The problems of space flight as they relate to the visual mechanism are disc ssed. Substantial portions of the Brown report are quoted in the present report. This report, in addition to updating the Brown report, presents a considerable amount of additional information regarding specific critical visual problems, as well as a recently compiled, extensive bibliography of research in this field. (Author).
Author | : Jancy C. McPhee |
Publisher | : U. S. National Aeronautics & Space Administration |
Total Pages | : 396 |
Release | : 2009 |
Genre | : Biography & Autobiography |
ISBN | : |
Download Human Health and Performance Risks of Space Exploration Missions Book in PDF, ePub and Kindle
Author | : Alberto Hernández Pamplona |
Publisher | : The Rosen Publishing Group, Inc |
Total Pages | : 106 |
Release | : 2017-07-15 |
Genre | : Juvenile Nonfiction |
ISBN | : 1508175837 |
Download A Visual Guide to Space Exploration Book in PDF, ePub and Kindle
Few frontiers have inspired human imagination as much as the final frontier: outer space. What seemed impossible a mere hundred years ago has now been accomplished, as humans have sent astronauts into orbit and onto the moon, and rovers and satellites continue to travel farther out, beaming invaluable data about our universe back to Earth. This illustration-packed title covers the most outstanding events since humans landed on the moon. Missions to the different planets are presented, as are images and details of space stations, satellites, and Mars rovers. Even reluctant readers wonメt be able to stay away from this visual delight.
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 37 |
Release | : 2005-02-01 |
Genre | : Science |
ISBN | : 0309165253 |
Download Science in NASA's Vision for Space Exploration Book in PDF, ePub and Kindle
In January 2004, President Bush announced a new space policy directed at human and robotic exploration of space. The National Academies released a report at the same time that independently addressed many of the issues contained in the new policy. In June, the President's Commission on Implementation of United States Space Exploration Policy issued a report recommending that NASA ask the National Research Council (NRC) to reevaluate space science priorities to take advantage of the exploration vision. Congress also directed the NRC to conduct a thorough review of the science NASA is proposing to undertake within the initiative. This report provides an initial response to those requests. It presents guiding principles for selecting science missions that enhance and support the exploration program. The report also presents findings and recommendations to help guide NASA's space exploration strategic planning activity. Separate NRC reviews will be carried out of strategic roadmaps that NASA is developing to implement the policy.
Author | : Institute of Medicine |
Publisher | : National Academies Press |
Total Pages | : 317 |
Release | : 2001-11-20 |
Genre | : Science |
ISBN | : 0309170311 |
Download Safe Passage Book in PDF, ePub and Kindle
Safe Passage: Astronaut Care for Exploration Missions sets forth a vision for space medicine as it applies to deep space voyage. As space missions increase in duration from months to years and extend well beyond Earth's orbit, so will the attendant risks of working in these extreme and isolated environmental conditions. Hazards to astronaut health range from greater radiation exposure and loss of bone and muscle density to intensified psychological stress from living with others in a confined space. Going beyond the body of biomedical research, the report examines existing space medicine clinical and behavioral research and health care data and the policies attendant to them. It describes why not enough is known today about the dangers of prolonged travel to enable humans to venture into deep space in a safe and sane manner. The report makes a number of recommendations concerning NASA's structure for clinical and behavioral research, on the need for a comprehensive astronaut health care system and on an approach to communicating health and safety risks to astronauts, their families, and the public.
Author | : Herman Noordung |
Publisher | : DIANE Publishing |
Total Pages | : 174 |
Release | : 1995-03 |
Genre | : |
ISBN | : 0788118498 |
Download The Problem with Space Travel Book in PDF, ePub and Kindle
A translation from German of a 1929 treatise by the author. Deals with the problem of the space travel. Expresses ideas about rocketry and space travel. Extensive treatment of the engineering aspects of a space station. Extensive bibliography. 100 drawings.
Author | : James Daniel Hardy |
Publisher | : |
Total Pages | : 352 |
Release | : 1964 |
Genre | : Adaptation (Physiology) |
ISBN | : |
Download Physiological Problems in Space Exploration Book in PDF, ePub and Kindle
This book discusses the physiological aspects of space travel, and problems which occur when the human body is subjected to the environment of space.