red-blind vs protanopic

red-blind and protanopic both are adjectives.

Word	Noun	Adjective	Verb	Adverb
red-blind	No	Yes	No	No
protanopic	No	Yes	No	No

As adjectives, red-blind and protanopic are synonyms defined as:

red-blind and protanopic: inability to see the color red or to distinguish red and bluish-green

red-blind (adjective)	protanopic (adjective)
inability to see the color red or to distinguish red and bluish-green	inability to see the color red or to distinguish red and bluish-green