The first ones that came to my mind you already have seen them. What if you list the dramas you have seen with that topic?
Dramas you have already seen and I would recommend:
That winter, the wind blows
Beautiful life
They are not drams, but I can say some movies you haven't seen yet.
I would recommend
Kokoro no ito.
I love this movie. It's about the son of a deaf woman who meets a deaf girl and the main focus is the relationship between the boy and his mother. It's not a big story, maybe a bit simple in execution but a nice one.
Hanayome no Chichi is a movie about a deaf girl. I didn't like it very much, my main reason to watch it was Mukai Osamu.
Ai wa mieru. About a blind girl who wants to be a singer. It's a special, based on a true story.
Blind. I love it. I think it's one of my first korean thrillers. It's about a police woman who went blind because of an accident. The movie starts with she being a witness for a hit and run case.