The four exams are the following:
- An FAA-approved alternate color plate test, such as the: AOC (1965 edition) AOC-HRR (second edition) Dvorine. Richmond (1983 edition) Richmond-HRR.
- Operational Color Vision Test (OCVT) DAY.
- Operational Color Vision Test (OCVT) NIGHT.
- Color Vision Medical Flight Test.