Vision Problems For Some Returning Astronauts

astroengine writes "A newly discovered affliction has some doctors wondering if astronauts traveling to Mars could have problems with their eyesight by the time they got there. About one-third of U.S. crew members aboard the ISS return with impaired vision, one case of which was permanent. The reason for the late discovery of this mysterious affliction is the reluctance of astronauts on active service to come forward — the risk of being grounded after complaining of blurry vision is considered too great."

Comments

Re:Weightlessness is a Bitch

[TheRaven64]

If you're referring to centrifugal forces, then you might like to do the sums sometime to work out how big it would need to be for the difference between perceived gravity at your feet and in your head to be close enough not to be noticed (say, within 0.05g). Then add in the amount of extra space you'd need because you can now only use one side of every room, rather than the entire volume. Then multiply the result by the cost of getting things into space. And then realise why the ISS does not do this.