I once attended an inservice lecture for people who work with the deaf and the Dr  lecturing said there  are many types of deafness above a loss of volume. There is deafness to certain pitches, the inabilty to distinguish one noise among many, garbled noise which cannot translate the noise into  something recognizable  as examples. The three I mentioned don't necessarily mean  the noise has to be louder, and in fact can make it worse. For myself, clearly hearing one voice with a lot of background  noise is very hard. Unfortunately, getting a hearing aid that just amplifies noise can't help with these problems.
I have a similar vision problem in that given time to focus on something I can see it clearly, but focusing when I or the object I am looking  at is moving is not so good.
Be safe and well...