Re: If Tony Stark was blind.
There was a time when Spider-Man got blinded for a longer period than usual by the Masked Marauder, he was helpless until near the end of the story he developed his radar sense much like DareDevil
Since it's the same universe, it could happen for Tony, or he might ask some of his crew to help him build something fixing his eyes, even if not for the aid of Extremis virus and his latest armor
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