2014) found different selections for real protanopes and real deuteranopes.
R] values over one for real protanopes and the pseudoachromatic greens (they see such stimuli lighter than do common observers) but [L.
Age in Years Protanope Deuteranope Tritonope 30-40 -- -- -- 41-50 -- -- -- 51-60 1 1 -- 61-70 -- -- --
9) In group II, non-diabetic subjects out of 85, 83 had normal colour vision, only 2 subjects had colour vision deficiency (One protanope and one deuteranope).
The two observer types for whom alterations in luminance-lightness are the most well known are protanopes
and aged tritanomalous (op.
The differences are statistically significant, except for normal participants between G and Y signals, for deuteranomals between G and Y signals, for deuteranopes between R and Y signals, for protanomals for Y signals with both R and G signals, and for protanopes
for Y signals with both R and G signals.
22) All deuteranopes and 96% of protanopes
failed the test.
The neutral points for deuteranopes, protanopes
and tritanopes are around 498nm, 492nm and 569nm respectively.