Meanwhile, commenters in the Reddit thread offer their own takes on how Fury loses an eye. The most popular one, funnily enough, is Goose the cat. Goose has already been in a ton of marketing for the movie, and in the comics, Goose is actually an alien who looks like a cat. Never trust a cat, Fury!
Article source: https://www.cinemablend.com/news/2465461/how-does-nick-fury-lose-his-eye-captain-marvel-theories-abound