Study Shows Over Half Of Astronauts Have Eye Issues After Long Spaceflights.

The ABC News (3/13, Potter, Sunseri) website reports how NASA is finding that astronauts are having sometimes permanent eye issues after they return from space. University of Texas Health Science Center researchers have “done MRIs on 27 astronauts who spent more than month in space, and reports in the journal Radiology that 60 percent have what, on the ground, would be called intracranial hypertension — high fluid pressure in the skull.” Team leader Larry Kramer said this result could have implications for people on Earth. However, this “looming issue” does not have an easy solution since with those unaffected appearing “immune” to the problem Kramer “said there was no guessing what would protect some but not others.”
AFP (3/13), which goes into more detail on the findings, notes “fifteen percent had a bulging optic nerve and 11 percent showed changes to the pituitary gland — which is located between the optic nerves, secreting sex hormones and regulating the thyroid — and its connection to the brain.”


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