Comment Surprised this is news (Score 1) 203
My father was on submarines, and would come home from a 10-12 week patrol mildly short-sighted. He was ordinarily long-sighted, with a prescription to match.
We tell cube droids to 'rest their eyes' periodically during a 8 hour shift, by taking some time to focus on something that isn't 2 feet away (out the window, etc) exactly because this is a known issue. How did no-one assume that the same would happen on the ISS?