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(6) A person must demonstrate that he or she meets the criterion in item
1.39 of table 67.150 by:
(a) in daylight, or artificial light of similar luminosity, readily
identifying a series of pseudo-isochromatic plates of the Ishihara
24-plate type, making no more than 2 errors; or
(b) for somebody who makes more than 2 errors in a test mentioned
in paragraph (a), readily identifying aviation coloured lights
displayed by means of a Farnsworth colour-perception lantern,
making:
(i) no errors on 1 run of 9 pairs of lights; or
(ii) no more than 2 errors on a sequence of 2 runs of 9 pairs of
lights; or
(c) for somebody who does not satisfy paragraph (a) or (b), correctly
identifying all relevant coloured lights in a test, determined by
CASA, that simulates an operational situation.
The full document is here:
http://www.casa.gov.au/manuals/regul...e/080r0201.pdf
Here is an article that might be of interest to you:
Predicting Farnsworth Lantern success with a six-plate series of the ishihara Pseudoisochromatic plates | Military Medicine | Find Articles at BNET