15th February 2012, 12:17 AM
At least, female astronauts haven't seen any of the vision degradation that apparently some male ISS astronauts have, in the 6 month to 1 year stays they've had. The article (below) is an interesting article, this isn't a spaceflight problem I had ever considered before but it's another one we'll have to deal with, obviously.
http://lightyears.blogs.cnn.com/2012/02/...?hpt=us_c2
http://lightyears.blogs.cnn.com/2012/02/...?hpt=us_c2