Quantification of Ophthalmic Changes After Long-Duration Spaceflight, and Subsequent RecoveryA subset of crewmembers are subjected to ophthalmic structure changes due to long-duration spaceflight (>6 months). Crewmembers who experience these changes are described as having Spaceflight Associated Neuro-Ocular Syndrome (SANS). Characteristics of SANS include optic disk edema, cotton wool spots, choroidal folds, refractive error, and posterior globe flattening. SANS remains a major obstacle to deep-space and planetary missions, requiring a better understanding of its etiology. Quantification of ocular, structural changes will improve our understanding of SANS pathophysiology. Methods were developed to quantify 3D optic nerve (ON) and ON sheath (ONS) geometries, ON tortuosity, and posterior globe deformation using MR imaging.
Document ID
20200001347
Acquisition Source
Johnson Space Center
Document Type
Poster
Authors
Sater, S. H. (Idaho Univ. Moscow, ID, United States)
Rohr, J. J. (Idaho Univ. Moscow, ID, United States)
Sass, A. M. (Idaho Univ. Moscow, ID, United States)
Macias, B. R. (KBRWyle Aerospace Group Houston, TX, United States)
Marshall-Goebel, K. (KBRWyle Aerospace Group Houston, TX, United States)
Ploutz-Synder, R. J. (Michigan Univ. (HQ) Ann Arbor, MI, United States)
Laurie, S.S. (KBRWyle Aerospace Group Houston, TX, United States)
Greenwald, S. (KBRWyle Aerospace Group Houston, TX, United States)
Stenger, M. B. (NASA Johnson Space Center Houston, TX, United States)
Martin, B. A. (Idaho Univ. Moscow, ID, United States)