More than half of American astronauts experience some vision changes to their eyes during and after long-duration space flight. We're exploring Vision Impairment Syndrome on the International Space Station to help benefit astronauts and people on Earth. See how: https://youtu.be/axy5EJtXr34 | NASA - National Aeronautics and Space Administration
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1.5M views · 505 reactions | After going to multiple hospitals, it wasn’t until Alyssa saw a local eye doctor that next steps to finding a diagnosis became clear. | VSP Vision Care | Facebook
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Zack Oakey, MD on Instagram: "Photopsia refers to the perception of flashes of light without an external light source. In ocular (migraine) photopsia, the phenomenon arises from transient cortical or retinal ischemia associated with migraine activity. These flashes are typically bilateral, may appear as zigzag or scintillating patterns, and often evolve gradually over several minutes before resolving completely, sometimes followed by a mild headache or visual fatigue. In contrast, photopsia from
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