With the progression of the retinopathy, colour perception can also be disturbed, typically manifesting as blue-yellow deficits and associated protanomalous
defects in the red end of the spectrum.
A colour TV picture properly adjusted for most people may appear too green to a protanomalous
(weak red) observer, or too red to a deuteranomalous (weak green) viewer.
No statistical analysis was done using the deuteranomalous and protanomalous
subgroups because of the small number (5) in each subgroup, but a clear trend of increasing response time with increasing severity is apparent for the deuteranomalous participants for both R and Y signals (Figure 4).
The matching ranges of protanomalous
and deuteranomalous trichromats form two separate distributions outside the normal matching range.
Most protanomalous trichromats have two L/M chimeras.
01% relative deficiency luminous Protanomalous 1% 0.
A woman (connected with a marine organisation) is clearly protanomalous
server; the protanomalous observer will need more red in the mixture whereas the deuteranomalous trichromat will need mare green (Figure 1).
Birch (17) reported that when classification was made only when the anomalous trichromat reported seeing a single digit, 47% of protanomalous trichromats and 57% of deuteranomalous trichromats were classified correctly.
trichromat has two cone types with a photopigment spectral sensitivity peak around 530nm (Figure 11b).