tetartanopia
/ˌtɛtɑːrtəˈnoʊpiə/
noun
- A very rare form of color blindness in which a person cannot see blue and yellow colors, seeing the world in shades of red and green.
- Tetartanopia is so rare that most eye doctors never encounter a case in their careers.
- People with tetartanopia have trouble distinguishing blue objects from yellow ones.
- The vision test revealed that the patient had tetartanopia, not the more common red-green color blindness.