The collision of the character with the environment only works correctly (in the eyes) when I use the original skeletal mesh.
I tested it in the most varied sizes and it worked perfectly.
It turns out that when I import any 3D object (FBX of Blender), it does not work properly (though the UE4 says that in the import it makes several adjustments).
I realized that the problem is because of the capsule component, which is responsible for detecting the character's collision with the environment. So at first I would like to know how to increase its size and make modifications.
Links that I researched and that helped me in some way: