yes, I have a theory

or, at least, sort of one ...
most coaches will advise you to do all the aiming standing up, they'll explain how to carefully drop into the address position keeping on the line of aim you've chosen ... and then, quite amazingly, they'll tell you to focus on the object ball as you deliver the cue ...
why, oh why?
it makes no sense ... if you're lined up correctly, you really don't need to look at the object ball ... just try to deliver the cue straight either with your eyes closed or by looking at the cue and the cueball only ...
the big danger with looking at the object ball is you tend to steer the cue - so you can get away with incorrect lining up and correct it during delivery ... this is bad news!
in your case sixofclubs, it sounds like you are lining up correctly but then steering the cue as you deliver with your eyes open - it's a natural thing to do, I remember an interview with Ronnie from a year or so ago discussing his poor long potting and he said much the same ...
I've never tried playing a match with eyes closed but I did switch about a year ago from looking at the object ball to looking at the cue ball during delivery ... specifically, I feather as normal switching eyes between OB and CB but then at front pause, I focus on the CB (my cue is also in focus) and try to draw it back and deliver it straight ... if I've lined the shot up correctly I'll get the pot, if I haven't I won't ... oh, and if I deliver the cue poorly, I won't get the pot but can see it cos I'm looking at it ...
it takes a little while to get used to and I certainly spend a few extra seconds whilst standing up getting myself lined up properly but I think that is good news ...
IMHO, there is no need to look at the object ball during delivery and good reasons why you shouldn't (steering, poor line-up, pressure of the shot) etc ...
try it peeps! you might enjoy it if only because it simplifies the game ...