>>13606867You haven't gotten a single good answer, so let me tell you what's actually going to happen.
The most immediate cure is going to be BCI tech that operates similarly to a cochlear implant.
Sound will be captured via a high quality microphone, preferably located inside the ear, and will then be wirelessly transmitted to a receiver inside the skull which feeds the information directly to your auditory cortex.
Blindness could be cured in a very similar fashion, but depending on the type of blindness (for example, optical nerve damage) it might be possible to use the patient's natural eyes and just capture the signal they generate.