Well I failed the Ishihara test today, a shame because the rest of my medical was immaculate, and now I've got to make a booking for the farnsworth lantern test, has anyone done this test and failed the ishihara? Can anyone give an indepth description of what its actually like? How far away are the dots (for instance on a computer screen how large would they be)? Do they change hues/contrast? Whats the pass rate in Australia for this and what is considered a pass?