Long space missions harm astronauts' eyes and vision, casting doubt on travel to Mars Discover how long-term space missions impact astronauts' eye health, with over 70% experiencing vision changes due to microgravity.

Long space missions in microgravity take a toll on astronauts’ eyes: Discover how long-term space missions impact astronauts' eye health, with over 70% experiencing vision changes due to microgravity.

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