Bit of a preamble, I grew up around Hell's Kitchen. I met Matt and Foggy when they had their firm (RIP Foggy Bear). I would stop by often to learn and help out since I wanted to be a lawyer, so after school I'd just hang around. Now that I'm halfway through Law School, seeing this revelation, Matt Murdock is really blind. Kinda embarrassed that I was a really obnoxious kid, Matt was really patient. He let me shine a light in his eyes. Foggy got mad at me after I had a laser pointing at Matt's eyes.(I didn't have parents, so I learned how to be a proper adult from everyone else). I can confirm he is blind. With how packed their office was most of the time, plenty of witnesses too.
I don't understand how Matt does what he does. Is he like the blind ninja warrior we see in media? Like through training you can see the through your ears? I haven't talked to Matt after what happened and since he moved on, I thought it was best that the random annoying kid during the Hell's Kitchen days didn't remind him of better days. I know some people on here are experts of abilities and powers. I don't understand how these superhuman feats get triggered? If you train hard enough can you just do that he can do? Has Matt always had abilities? Does his power make it so he can see?
I can answer questions about Matt, he is a good man and if he needed a character witness, I'd be more than happy to help.