when we were discussing the CAsA bastardry the other night in the clubhouse I named the 5 pilots. none in my presence could believe that they had any impairment.
they are 5 of the best pilots in the club.
If there perception and attention isn't affected for tasks they just see things differently to the norm then they do not have an impairment. I was recently told of a military pilot whom had blue/yellow color blindness. Had flown for years with no issue. Pilots only tested for red / green so wasn't picked up.