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Effect of microgravity on several visual functions during STS shuttle missionsChanges in the acuity of astronaut vision during flight are discussed. Parameters such as critical flicker vision, stereopsis to 10 seconds of arc, visual acuity in small steps to 20/7.7, cyclophoria, lateral and vertical phoria and retinal rivalry were tested using a visual function tester. Twenty-three Space Transportation System (STS) astronauts participated in the experiments. Their vision was assessed twice before launch and after landing, and three to four times while on-orbit and landing. No significant differences during space flight were observed for any of the visual parameters tested. In some cases, slight changes in acuity and stereopsis were observed with a subsequent return to normal vision after flight.
Document ID
19920013088
Document Type
Conference Paper
Authors
Oneal, Melvin R. (Aerospace Medical Research Labs. Wright-Patterson AFB, OH, United States)
Task, H. Lee (Aerospace Medical Research Labs. Wright-Patterson AFB, OH, United States)
Genco, Louis V. (Aerospace Medical Research Labs. Wright-Patterson AFB, OH, United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1992
Publication Information
Publication: NASA. Johnson Space Center, 5th Annual Workshop on Space Operations Applications and Research (SOAR 1991), Volume 2
Subject Category
BEHAVIORAL SCIENCES
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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