Hi,
Lets apply some science. I actually studied this at uni so I kinda know what I'm talking about.
People often say they watch the ball all the way onto the bat, (Boycott etc!) but for balls speeds over about 60 mph it's actually impossible to really do that. Why? the eyes can move quick enough. This is true even for first class players, even for the greats!
So what do the pros actually do then? Well its a case of seeing it out of the hand (which we will come back too), seeing it pitch, and this is the important part, the eyes then move to where they think the ball is going to meet the bat -i.e. they jump forward - this is less noticeable to spin, and more evident against pace, but generally you need special tech to see it happening. You can see the end point though, all those slow motion replays on sky of some one smashing it and the close up on the face!
So back to the ball out of the hand bit. This is most often what makes the difference between "good and bad". Better players, can tell more quickly once the ball has left the hand, the line and length of the delivery. The sooner you know where the ball is coming the easier it gets to hit it - right!
So back to your question. If you can, and its not easy to do, you need to try and find the ball hitting the bat. Pragmatically the only thing you can really do to work on this is to try and watch the ball as closely as you can. but you might find that you watch it closely until it pitches then "lose" it. Its that bit that you can now address, and try and move to point of impact.
Good luck, this is a very hard thing to get right.
Ross