Hey
Ok the CONTINUOUS issue is that... ishihara testing is only reliable in the controlled inviroment it was designed for, proper lighting, and the plates do fade over time.. Seocnd the test clearly states the same old story 13 out of 15 plates, you are good to go, the crap about getting all the plates right comes from the old fashion armed forces standard, and this was only used to filter out people at the medical.. and that is the truth, and some bright spark at the CAA/JAA descided, yeah we will continue that standard...
The cad is a student at one university's PHD, and the cad is a clinical test.. The one, the length of time to do the test 15 min, and that is too long to be playing a game to look for a signal box, fatigue and other things set in, and also the TECHNICIAN clearly stating ' oh and if you dont see a signal' ' have a guess' see if they allowed a 30 sec or 5 min test, that would be better..
Oh and a question to all, anyone found the ammendemtn to the JAA medical books about the process for the CAD... i can find it...