Continuity mistake: When Gordon is on the ground after being knocked down by the door, in one shot his left hand is above his head, but in the very next shot, his left hand is below his head.
Other mistake: In the final fight, V slices a man's right wrist, but blood only comes out of his left arm.
Continuity mistake: In the final fight, when V slices a man's chest twice there's no blood on his face, but in the very next shot, there is.
Chosen answer: Yes, V can see. As a result of the experiments performed upon him, V has increased strength, stamina, reflexes and speed. All of these could be considered to be at least at the maximum possible level for a human and possibly slightly in excess of that. His mental capacity has also been enhanced to genius level or above.
Tailkinker ★