When astronauts began spending six months and more aboard the International Space Station, they started to notice changes in their vision. For example, many
I don’t fully understand what the science is behind this issue but I do know that your eyes are easily affected by your blood and blood pressure.
I used to have regular drops in blood pressure and actually was hospitalized because it was 60/30 once when they checked. I actually lost vision in one eye because blood flow was decreased to the eye long enough the optic nerve died. They speculated it was a significant BP drop that caused it.
I don’t fully understand what the science is behind this issue but I do know that your eyes are easily affected by your blood and blood pressure.
I used to have regular drops in blood pressure and actually was hospitalized because it was 60/30 once when they checked. I actually lost vision in one eye because blood flow was decreased to the eye long enough the optic nerve died. They speculated it was a significant BP drop that caused it.