As the resident eye doctor here, I can tell you that the glasses have no sort of prescription which would affect a boxing match. You can tell it's a mild prescription because there is no signifciant minification or magnification of his eyes when you look at him with the lenses on. Boxing doesn't require being able to see fine details perfectly anyway. With that said, it says plenty from a psychological standpoint thst Loma would elect to wear glasses to a stare down.