| Daltonism | ดาลโทนิสม [การแพทย์] |
| Daltonism | n. Inability to perceive or distinguish certain colors, esp. red; color blindness. It has various forms and degrees. So called from the chemist |
| deuteranopia | (n) dichromacy characterized by a lowered sensitivity to green light resulting in an inability to distinguish green and purplish-red, Syn. Daltonism, green-blindness |