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Ptotanopia vs Deuteranopia - What's the difference?

ptotanopia | deuteranopia |

As a noun deuteranopia is

a form of color blindness involves a defect in distinguishing between red and green.

ptotanopia

Not English

Ptotanopia has no English definition. It may be misspelled.

deuteranopia

English

Noun

(en noun)
  • A form of color blindness. Involves a defect in distinguishing between red and green.

    • See also

    *protanopia *tritanopia