One synonym for red-green blindness is color vision deficiency, a condition that affects the perception of colors. Another synonym for this condition is Daltonism, named after John Dalton, a scientist who also had this vision disorder. Other related terms include dichromatic vision, which refers to the inability to distinguish between certain colors, and protanopia/deuteranopia, which are types of color blindness affecting the red-green spectrum. While some people with color vision deficiency may be able to see colors, they may struggle to distinguish between hues in certain lighting conditions or with certain shades. Awareness of these terms helps to improve understanding and empathy for those with the condition.