Did you know that astronauts in space often experience changes in their vision due to fluid shifts within their bodies? When humans are in microgravity, fluids that are normally pulled downwards toward the feet on Earth shift towards the head, causing a buildup of pressure within the skull. This pressure can affect the shape of the eyeball, leading to distorted vision, changes in visual acuity, and an increased risk of developing conditions like optic disc edema and choroidal folds. These vision changes are of particular concern for long-duration space missions, including those to Mars, and highlight the ongoing research needed to better understand human adaptations to space travel.
@science
@science