Tony, there is an electronic transmitter device that broadcasts sound directly to the hearing center of the brain. It's proven that the deaf can hear with it. It's not known by the medical mainstream. I learned about all kinds of alternative technology more than 10 year agoSoooo, what is stopping hearing from being fully restored, to normal or better hearing?
I suspect greed, say as in money!
To all, stay safe and have a pleasant day.