Astronauts’ Vision Problems Linked to Prolonged Space Exposure, Posing Risks for Mars Missions

Astronauts returning from extended space missions are reported to experience significant changes in eye health, linked to prolonged exposure to microgravity. Researchers have identified that the altered blood flow and pressure conditions in space can lead to vision problems. These changes are primarily associated with a condition termed spaceflight-associated neuro-ocular syndrome (SANS), affecting around 70 percent of astronauts during six-…