I am going to be taking a colour vision test in the coming weeks as I failed 2 years ago and want to see one last time if I can be a pilot. Now if am able to pass the more practical lantern or light gun test, will airlines test me again for colour vision if I already passed all components of the Transport Canada Category 1 Medical (including the colour component)? Anyone with this knoweldge for any airlines is appreaciated as I don't want to get as far as medical testing at an airline and be rejected. Also, will an airline let you take a practical test for colour vision like the ones I will be taking?
I would appreciate information on this for as many airlines as possible, not only in Canada or North America. Thanks!