1. OCT Reveals Ocular Changes in Astronauts

    OCT Reveals Ocular Changes in Astronauts

    Researchers recently found that astronauts have disc edema-like changes in eye structure after returning to Earth from the International Space Station (ISS). The study looked at morphological changes in the optic nerve head and surrounding tissues in 15 astronauts after they completed a roughly six-month mission aboard the ISS. The results were compared with 43 healthy control patients with no history of exposure to microgravity in space. After analyzing optical coherence tomography (OCT) data for the astronauts collected before and after the mission, the researchers found three major changes in eye structure. Before the flight, the astronauts presented with recessed ...

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