green but not tea

do you know if there's such a thing as yellow-green color blindness? and can you have it in just one eye?

my father has what i always thought was red-green blindness, but he can't tell if bananas are ripe. i thought i'd escaped inheriting it, but just this morning i noticed when i close my right eye the yellows on my computer screen turn chartreuse.

unable to believe i'd been unaware of such a thing all my life, i looked one-eyed at some other yellow objects. they still looked yellow.

what's going on here?