Some thoughts on hearing loss and hearing aids. I lost a lot of hearing while in the Navy. Probably caused be being a fuse setter in a five inch gun mount and as the Ground Electronics Officer at a Naval Air Station in the Philippines at the end of the Vietnam war. I remember getting a physical there and the doctor remarking "If you buy a stereo here, don't pay very much for it, because you can't hear it." I kind of ignored it until a few years later I was teaching and having to have my students repeat their questions told me I had to do something about it. Even though I was retired from the Navy and entitled to medical care from them, they didn't do hearing aids. I had to get them from the VA hospital. Originally, they said that they would supply the aids and batteries, but it was classified as a zero per cent disability. That way they didn't have to pay any disability pay. Not sure if the hearing is worse now, but they may have gotten more liberal and they now consider it 40% disabling. About every five years or so they have provided newer hearing aids. The present ones work great. They fit inside the ear and have rechargeable batteries so I lay them on the charger before I go to bed at night. I can adjust the volume using my cell phone.
Ray