My father in law is 65 yrs old . He is having High BP  from last 10 yrs and prostate problem from last 7 yrs. He use to work in power plant in a noisy environment. He is unable to understand the spoken words, hence the words are repeated at least once and then he understands.  Further his ear wax is formations are also very hard to extract.(problem since last four years). Pls suggest some good treatment so that he can improve hearing.