Hi I am going to pop into a recruitment office this next week to start the processes of an application to the Navy. I am colour blind - but going for a branch with CP4 standards. Does anyone know of any national chain of opticians that does the lantern test and possibly the wires test? I can't seem to find any information about what the test actually is online.... I know I can't really practise it but it would be good to find out if I would pass it at some standard - so I know whether I should or should not get my hopes up.