Old Black and White movie, Navy Captain faces murder charges for turning old woman out to sea that was hanging on lifeboat.

Maybe 25-30 years ago, a movie about 2 brothers, one of which was blind but really didn’t realize it because his brother provided opportunities for him to do anything a sighted man would do.  Sports, driving, everything. The climax is when the blind man discovers his limitations as he gropes around in a swimming pool attempting to find a drowning child, realizing he was blind for the first time in his life.