How did Nick Fury lose his eye and get his eye patch?
Fury's injured left eye, though initially minimally affected by a grenade blast during World War II, has over the decades resulted in a 95% loss of vision in this eye.
However, I doubt Nick Fury from the movie got it for the same reason, he probably did not participate to World War II and he was not in Captain America's frozen luggage.
Also, in several closeups, you can see black veins extending from his eye patch, and 3 parallel scars like he was scratched by claws.
If we include information from the comic books and other sources, what's the explanation for the loss of his eye and the scars around it we see in the movie?
I thought he did participate in WW2 - weren't he and Dum Dum Duggan and someone else part of Cap's team dealing with the Red Skull? hmmm... no, it looks like just Dum Dum and Gabe...
The one clue we have is that it seems to be the result of a betrayal: in *Captain America: The Winter Soldier*, Nick Fury tells Cap, "the last time I trusted someone, I lost an eye." No details on who that might be, but it's a notable clue.
Spolier for Captain Marvel (2019)
It’s Goose, the Cat/Flerken that scratches Fury right across the eye.
I believe Goose is simply a Flerken; it’s just that Flerkens, to the untrained eye, look very similar to earth’s domestic cat.
@PaulD.Waite Indeed, but Goose is first introduced as a cat, we only learn later that it's a Flerken.
Makes me wonder whether the claw scratches as shown in the question was foreshadowing that scene in Captain Marvel.