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Sans

All articles tagged with #sans

space19 days ago•6 min saved

Tiny Eye-Scan Tech Aims to Shield Astronauts’ Vision on Deep-Space Missions

The European Space Agency is funding Siloton to build a compact, self-administered retinal scanner powered by quantum photonics to monitor spaceflight-associated neuro-ocular syndrome (SANS) on long missions, enabling more frequent eye checks without ground support; while power, mounting, and head-stabilization present challenges, the tech could improve astronauts’ ocular health data and spill over to terrestrial eye care.

via WIRED|

#esa #ophthalmology #sans

space1 month ago•14 min saved

Eyes Over Ears: The Brain Reweights Itself for Spaceflight

Spaceflight triggers a quiet but lasting reweighting of the brain’s senses: the vestibular system in the inner ear becomes unreliable in microgravity, so the visual cortex takes on more of the work for orientation and balance. MRI scans show the brain shifting upward, ventricles expanding, and SANS-related changes, with some effects persisting for months after return. The brain’s connections reorganize to rely on vision, a reconfiguration that generally normalizes on Earth but can yield lingering balance and dual-tasking challenges for some astronauts. These findings matter for long-duration missions, highlighting both brain plasticity and the rehab challenges after deep-space travel.

via Space Daily|

#brain #neuroscience #sans

science1 year ago•2 min saved

Space Missions Linked to Long-Term Vision Changes in Astronauts

Many astronauts experience permanent vision changes, known as Spaceflight Associated Neuro-ocular Syndrome (SANS), during long space missions due to fluid redistribution in microgravity, prompting NASA to develop countermeasures to protect astronauts' eyesight and ensure mission success.

via ScienceAlert|

#astronauts #nasa #sans

spaceflight3 years ago•5 min saved

"Microgravity's Impact on Astronaut Vision Under Study"

The Polaris Dawn mission crew will be dedicating major time to probe health impacts on the body from their sojourn into space, including the Spaceflight-Associated Neuro-Ocular Syndrome (SANS), a malady that includes swelling of the optic nerve, alteration in the shape of the eye itself, as well causing fuzziness to vision. SANS is tied to the absence of gravity's effects on the body, causing a fluid shift that can generate pressure changes in the brain and eye. The crew will be using a device built by PlenOptika and a Sensimed-produced "Triggerfish" contact lens to measure how the cornea changes shape over time.

via Space.com|

#astronaut-vision #eye-health #microgravity