The brief we were given was to take an existing character from a list, give them a disability that makes sense for them, and a prop to help them work alongside said disability in a way that fits their world.
For mine, I chose Iron Man. There was a lot that I could do since he lives in a heightened world. The idea I had was that he'd have burned corneas from the initial rocket explosion that forced him to build his now iconic arc reactor. A lot of research went into said conditions and the existing technology that exists to help those that are blind.
The biggest hurdle was avoiding the obvious Cyclops comparisons.