Assessment of Intraocular and Systemic Vasculature Pressure Parameters in Simulated Microgravity with Thigh Cuff Countermeasure

Changes in vision have been well documented among astronauts during and after long-duration space flight. One hypothesis is that the space flight induced headward fluid alters posterior ocular pressure and volume and may contribute to visual acuity decrements. Therefore, we evaluated venoconstrictiv...

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Bibliographic Details
Published inNASA Center for AeroSpace Information (CASI). Misc. Resources
Main Authors Huang, Alex S, Balasubramanian, Siva, Tepelus, Tudor, Sadda, Jaya, Sadda, Srinivas, Stenger, Michael B, Lee, Stuart M C, Laurie, Steve S, Liu, John, Macias, Brandon R
Format Web Resource
LanguageEnglish
Published Hampton NASA/Langley Research Center 23.01.2017
Subjects
Acuity
Astronauts
Cuffs
Intraocular pressure
Long duration space flight
Microgravity
Pressure effects
Thigh
Visual acuity
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Summary:Changes in vision have been well documented among astronauts during and after long-duration space flight. One hypothesis is that the space flight induced headward fluid alters posterior ocular pressure and volume and may contribute to visual acuity decrements. Therefore, we evaluated venoconstrictive thigh cuffs as a potential countermeasure to the headward fluid shift-induced effects on intraocular pressure (IOP) and cephalic vascular pressure and volumes.
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