I don't believe there are medical tecniques that can restore your hearing. They can insert an internal hearing aid, but I don't think they can do more then that. So turn down the volume of your mp3-player.
Yes and no. If you are exposed to loud noises for too long, your ears become damaged. It will seem that your ears are adapting but they are just becoming more damaged.
Otolaryngology is the medical term meaning study of the ears, nose and throat.
eyes (ocular/oculi) ears (auris)
Yes, and left untreated it can lead to hearing loss.
Ringing in the ears.
Because your ears have been damaged and the hairlike structures in your ears are compacted back almost.
To protect their ears and hearing from getting damaged by loud noises.
No it cannot hurt your body but it can damage your ears. The hairs in your ear ( the ones that you use to hear) may get damaged. Please note i said MAY as in it MAY get damaged and it MAY not.
if the retina is damaged - medical science cant repair that kind of damage
NAD means no apparent distress; it probably means the ears were normal.
Macrotia
Otolaryngology