the FAA don't test for it, but they ask you about your medical history so am slightly converned.
It wasn't quite 18 hours solid, I stopped for food/toilet breaks
I was only 13 and it was a good game! lol. I was living in kenya at time so there wasn't much to do but that (rainy season) plus the computer was really old and slow, and had a bad monitor.
my eyesight is fine, its easily within the limits for both JAA and FAA. The reason I am trying to get a FAA class1 is that they are more leanient to colourblindness.