the thing is kanade already technically has shitty vision (she is sensitive to brightness) so there is already an answer for this: she would wear neither LMAO. she is the type of person to insist she doesn't need glasses. but i like to think in the post-ending of the game when kanade is finally normal she would prefer to wear contacts because it's much more convenient to work with and knowing kanade's toxic relationship with The Grind she would definitely opt for something that gives her more versatility while working