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Visual Impairment and Intracranial Hypertension: An Emerging Spaceflight RiskWhat is the risk? Given that astronauts exposed to microgravity experience a cephalad fluid shift, and that both symptomatic and asymptomatic astronauts have exhibited optic nerve sheath edema on MRI, there is a high probability that all astronauts have some degree of increased intracranial pressure (ICP; intracranial hypertension), and that those susceptible (via eye architecture, anatomy, narrow optic disc) have a high likelihood of developing papilledema (optic disc edema, globe flattening), choroidal folds, and/or hyperopic shifts and that the degree of edema may determine long-term or permanent vision impairment or loss. Back to back panels on this topic have been developed to address this emerging risk. The first panel will focus on the 6 clinical cases with emphasis on ophthalmic findings and imaging techniques used pre-, in-, and post-flight. The second panel will discuss the operational mitigation and medical requirements, the potential role of CO2 on ISS, and the research approach being developed. In total these back to back panels will explore what is known about this risk, what has been done immediately to address it, and how an integrated research model is being developed.
Document ID
20100036740
Acquisition Source
Johnson Space Center
Document Type
Abstract
Authors
Fogarty, Jennifer A. (NASA Johnson Space Center Houston, TX, United States)
Polk, J. D. (Wyle Integrated Science and Engineering Group Houston, TX, United States)
Tarver, W. (Wyle Integrated Science and Engineering Group Houston, TX, United States)
Gibson, C. R. (Wyle Integrated Science and Engineering Group Houston, TX, United States)
Sargsyan, A. (Wyle Integrated Science and Engineering Group Houston, TX, United States)
Taddeo, T. (Wyle Integrated Science and Engineering Group Houston, TX, United States)
Alexander, D. (Wyle Integrated Science and Engineering Group Houston, TX, United States)
Otto, C. (Wyle Integrated Science and Engineering Group Houston, TX, United States)
Date Acquired
August 25, 2013
Publication Date
January 1, 2010
Subject Category
Aerospace Medicine
Report/Patent Number
JSC-CN-21948
Meeting Information
Meeting: 82nd Annual Scientific Meeting of the Aerospace Medical Association
Location: Anchorage, AK
Country: United States
Start Date: May 8, 2011
End Date: May 12, 2011
Distribution Limits
Public
Copyright
Public Use Permitted.

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