I don’t need glasses. Haven’t had my hearing tested, but I think it might be better than average. I can hear high frequencies annoyingly well, 20kHz or a little more (checked with a spectrum analyzer). It’s fun to listen to the high harmonics in music. Vacuum cleaners and electric cars are less fun.

I can usually hear my muscles and bones moving. It’s very quiet and low frequency, and the muscles rumble. I can usually tune it out though.