The classification plates are more effective for deuteranopes
than protanopes, with a correct classification possible for around 90% of deuteranopes
and around 80% of protanopes.
Among the colour blind 20 (1.2%) were protanopes, 3 (0.2%) were deuteranopes
and none were tritanope.
(2014) found different selections for real protanopes and real deuteranopes
. These values are similar to those found in other works (i.e., see Figure 6 in ref.
Out of 21 deuteranopes
18 (85.7%) were familial and 3 (14.3%) cases were sporadic (Table III).
Additionally, the current study complements our previous work (Lillo et al., 2012; Moreira et al., 2012) on dichromats' (protanopes and deuteranopes
) use of BCTs (for a complete description of both studies see Moreira, 2010).
Post hoc analysis for R signals shows that normals have significantly shorter response times than do all color-deficient groups except for protanomals, and that protanomals have significantly shorter reaction times than do deuteranopes
. A similar pattern occurs with Y signals, except that both deuteranomals and protanomals have significantly shorter response times than do deuteranopes
There ar those (deuteranopes
) whose cones lack one light-absorbing dominant pigment (in the green range of light waves for most observers under most conditions) and those (protanopes) who lack, instead, another light-wave dominant pigment (in the red range of light waves for most observers under most conditions).
Out of these 8 subjects, 5 subjects were deuteranope
and 3 subjects were protanope.
are unable to distinguish red, yellow, and green when the brightness of all three colors is equal.
Protanopes have a normal M gene, whereas deuteranopes
have a normal L gene.
Those with colour vision defects see the spot differently; for example protanopes usually describe it as blue or dark because their red sensitivity is reduced, and most deuteranopes
cannot see the spot at all.
Hodd (81) found that the success rate was 100% for deuteranomalous trichromats and 36% for deuteranopes
; protons were not well represented in the study.