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this post was submitted on 07 May 2025
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Eye degeneration? I've heard of all the other adverse health effects from space, but not this one. Sounds interesting, please tell us more
https://www.aao.org/eye-health/news/nasa-space-flight-impacts-astronauts-eyes-vision
"The study examined seven astronauts in depth and found eye structure and vision abnormalities in all of them. The most common structural change was flattening of the back of the eyeball. Changes in the retina, the light-sensitive area at the back of the eye, and the optic nerve were also found. In some astronauts these changes persisted long after their return to Earth."
"In a separate NASA survey of 300 male and female astronauts, about 23 percent of short-flight and 49 percent of long-flight astronauts said they had experienced problems with both near and distance vision during their missions. Again, for some people vision problems persisted for years afterward."
They call it Space-flight associated neuro-ocular syndrome
https://www.nature.com/articles/d41586-025-00654-7