In Russia, color-blindness is referred to as Daltonism, and I figured Francis must have been the one to be the source of that (given this topic), but apparently it was John Dalton: https://en.wikipedia.org/wiki/John_Dalton
Quite a lot of languages use daltonism actually: French (daltonisme), Spanish (daltonismo), Italian (daltonismo), Portuguese (daltonismo), Catalan (daltonisme), Romanian (daltonism), Polish (daltonizm), Russian (дальтонизм), Greek (δαλτωνισμός), and Turkish (daltonizm).
