right so it was an initial class 2 then , ok
if you read the whole subject, you will find that the people that pass the ishihara plates on the bases of acheiving 13 plates min, which by the test standard in normal or cp2, then most can be train drivers, more demanding job. ive had my cv tested by my university and they say that although there might be a vslight green weakness, it would certinaly not be enough to be concidered unsafe for night flights, i have an faa cpl/ir and i have never had any issues with night flying at all....