PC Gamer - My eyes don’t have as many green receptors as normal eyes. The common color deficiency is called deuteranomaly, and it isn’t really a handicap as long as I’m not trying to distinguish between subtle variations in green and yellow. When would I ever have to do that? Oh right, games! They’re full of color coded data, and if they give me any trouble, then they give people with full color blindness lots of trouble.