What does "protanopia" mean?

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

Protanopia

Common synonyms include: color blindness, color vision deficiency, color vision status, diagnostic category, l-cone deficiency, l-cone dysfunction.

noun

noun ·Rare ·Advanced level

Noun

1
A form of color blindness. Involves a defect in distinguishing between red and green. uncountable, usually
2
dichromacy characterized by lowered sensitivity to long wavelengths of light resulting in an inability to distinguish red and purplish blue wordnet

From proto- (“first (color)”) + an- (“without”) + -opia (“vision”).