NASA reports shocking vision changes in astronauts after months in space with long-term eye damage risks

NASA studies vision problems in astronauts on the International Space Station. This condition is Space-Associated Neuro-Ocular Syndrome or SANS. Fluid shifts in zero gravity cause SANS. NASA tests thigh cuffs to manage fluid shifts. Advanced imaging and VR help monitor SANS. Research explores genetic impacts and potential treatments. This work is vital for future Moon and Mars missions.