| blue-blind | adj. unable to see the color blue or to distinguish the colors blue and yellow. |
| blue-blindness | n. inability to distinguish blue and yellow. |
| tritanopia | (n) rare form of dichromacy characterized by a lowered sensitivity to blue light resulting in an inability to distinguish blue and yellow, Syn. blue-blindness |
| tritanopic | (adj) inability to see the color blue or to distinguish the colors blue and yellow, Syn. blue-blind |