hey constellation...
Im not sure about that but I did a farnsworth lantern at Bangalore Class 1 centre 2 yrs back. and My strike rate was 21/24 so i was amiss at 3 sheets of the ishihara plates. So i really cant comment on your situation and the Class 2 doc.
But a fact i can share is that when i went for Class 2 I was unable to read only one sheet of Ishihara but the doc asked me to identify the point of differential colors which i did and she gave me a thumbs up in color perception and 4 months later during my Class 1 i was declared color deficient. Its funny so i'd suggest you do a detailed color blindness test with one of the leading eye hospitals in your area and then get a class 2 done again (in case you havent sent the reports to DGCA) or make an appeal
Haree