Editing Color blindness (section)

====Dichromacy====
{{main|Dichromacy}}
Dichromats can match any color they see with some mixture of just two [[primary color]]s (in contrast to those with normal sight ([[Trichromacy|trichromats]]) who can distinguish three primary colors).<ref name=":0" /> Dichromats usually know they have a color vision problem, and it can affect their daily lives. Dichromacy in humans includes protanopia, deuteranopia, and tritanopia. Out of the male population, 2% have severe difficulties distinguishing between red, orange, yellow, and green (orange and yellow are different combinations of red and green light). Colors in this range, which appear very different to a normal viewer, appear to a dichromat to be the same or a similar color. The terms protanopia, deuteranopia, and tritanopia come from Greek, and respectively mean "inability to see (''anopia'') with the first (''prot-''), second (''deuter-''), or third (''trit-'') [cone]".