NASA Tackles Space-Induced Vision Loss: New Tech Could Protect Astronauts’ Eyes and Brains on Mars Missions

NASA is investigating how microgravity affects astronaut health, particularly vision and brain pressure, aboard the International Space Station. The study focuses on fluid shifts toward the head that cause “puffy face” syndrome and may impair eyesight. JAXA flight engineer Kimiya Yui is leading an experiment using a thigh cuff on NASA astronaut Mike Fincke to reduce fluid buildup and pressure. “The thigh cuff investigation analyzes whether leg cuffs can counteract these fluid movements,” potentially aiding future Moon and Mars missions. Yui performed ultrasound scans and monitored Fincke’s heart activity to collect real-time data. Space-Associated Neuro-Ocular Syndrome (SANS) is a known condition in microgravity. Prior studies linked carbon dioxide and B vitamins to brain damage, while Canadian and Japanese research explored eye tissue stiffness and genetic changes, suggesting artificial gravity as a possible solution