There was a 1980's movie who I thought starred Mark Harmon but not sure. He was a blind guy who at one point was babysitting a 3-5 year old girl and she drowned in the pool. He dove in and feeling around, pulled her out. At another point he was driving a car because his buddy was drunk. Thanks for any help.

Sounds like,.

If You Could See What I Hear

That's it! Thanks straydog!