I think it's normal that as a musician your hearing loss increases either the ageness or the ears' exposure to the sound and noise.
Is deafness a limitation for a pianist (either teacher or student)?, can technological devices for loss of hearing really help?
I don't quite understand this sentence.I don't know a medical or scientific, physiological answer to these questions, but I can tell you that, even though I do not wish to lose what is considered my basic faculty to hear and to listen, I am finally becoming more fully aware that, for me (and I suspect for other people, too, if not actually everybody), to really hear is to feel with my entire being. There is something much deeper about hearing and about resonance than what is considered listening with an ear (and, this is an example of something I found about sound and music in general, and at the piano as a child). And, of course, there are plenty of people who are considered to be deaf who enjoy music with a different sort of sense.