I believe this warrants a diversity statement. A diversity statement need not be limited to URM status, but can be used to inform admission officers about unique, and extraordinary circumstances. I think your situation falls under that standard.
If it's already covered in your personal statement then don't use it in your diversity statement to avoid being redundant. If you have another option for your diversity statement that would be much better.
... 't use it in your diversity statement to avoid being redundant ... have another option for your diversity statement that would be much ... how it adds to the diversity of the campus as a ...
A reader for what accommodation? Visual disability or other? If the former, lmk; I work with a blind attorney right now and I'm happy to hook y'all up.