Updated original post to include digested information.
I have updated the original post for the historical aspect of giving any late comers some of the more relevant input.
Update-9/7/2015:
This thread has grown to 305 posts. There is a lot of background noise. I am going to consolidate some of the replies and linked information, that I find relevant.
From post #19;
TAR interview with Johnny Archer.
From post #26; DrCue'sProtege Quotes from the linked interview.
At about the 45:38 mark Archer says...."Really, the #1 thing you have to concentrate on is the CB cause thats all you will ever hit"
He goes on to say a few seconds later..."Amateurs dont get any better because they dont focus on the CB"
Common sense - CB or OB - its personal preference.
DCP
From post #61 by Taco; "Rodney Morris also looks at CB last. He explicitly says so on the Break & Run DVD set. It gives him better CB control. He says Efren and Parica do the same. But what do they know compared to a keyboard banger?"
In post #361 marikian provides a link to a youtube video titled,
"Advanced Fundamentals R Morris".
Cue ball last portion.
The statement that Efren looks at the cue ball last is proven false in
this TAR interview. Justin asked Efren on my behalf and his reply indicated he does not. His body language indicate he would find it ........well he puts his finger to his head and makes a scratching motion.
In post #65 CJ Wiley says; "You have discovered for yourself "the cue ball is the target".....we're aware of the object ball on the last stroke, however the real "aiming" is done at the cue ball. The cue ball is where you get your direct feel and is your direct connection to the game. Connection is one of the keys to Consistency in pocket billiards. "
More CJ from post #69; "Just remember, we "aim" at the cue ball because it's the primary target (we actually contact it), and we "connect" to the object ball (because it's the secondary target, we hit it indirectly). This should answer some questions about what's really happening."
When asked by Okie in post #72, what he looked at last. CJ replies in post #76, "I aim at the cue ball last, and shift to the connection {with my eyes} of the object ball {last} as I hit the cue ball. Read this carefully and you'll "real eyes" why there's some confusion, everybody is correct, in a manner of speaking."
Upon further inquiry by Okie;
Do you shift focus before, during or after the last backstroke?
Thank you for sharing!
Ken
CJ responds in post#80;
Basically simultaneously...you go from primary focus cue ball to primary focus object ball.....and this MUST be done subconsciously. DO NOT try to think about this, just connect to the shot and allow it to happen. Any other way can be dangerous and I know a few pros that got really messed up trying to tinker with this.
In post #95,
I try to give 3andstop an estimate of my level of play.
Poolmanis posts in #238; "Ronnie(O'Sullivan) said on some shots he watch cueball last even "they say it´s wrong"
It was some episode on his show at Eurosport."
From post #256; I found the episode;Episode 2 at 6:20
Question; "When you're, um, when you're down on this shot.... Are you, is the last the last ball you look at the cue ball? Or the object ball?"
Ronnie; "Uh I don't even know, to be honest with you."
Question; "No?"
Ronnie; "No, I don't even know. I suppose, it's meant to be the object ball, but I sometimes I find myself looking at the white."
From post #286; I link several shots of John Higgins eyes as he shoots.
John Higgins appears to look at the cue ball last:
https://www.youtube.com/watch?v=eQ9Jf8OYqBo&t=5991
https://www.youtube.com/watch?v=eQ9Jf8OYqBo&t=5433
https://www.youtube.com/watch?v=eQ9Jf8OYqBo&t=1291
https://www.youtube.com/watch?v=eQ9Jf8OYqBo&t=918
From post 287; I link Earl Strickland break shot showing eyes.
There has been anecdotal information that Earl looks at the cue ball last. Well I finally found a clip that shows his eyes while shooting. It is a break shot however and not necessarily how he shoots all shots. It does appear that his eyes are on the cue ball.
https://youtu.be/w1KGY3Xt6pw?t=9220
From post #288; I link to Paul Potier site.
I see Paul Potier added this on his site some time ago. Some very interesting insight from a knowledgeable instructor.
http://paulpotier.com/cue-ball-last-...ect-ball-last/
One last quote from Paul's article: "I had a very good friend who was a great Snooker player. We will just call him Bill. Bill and I played a lot of Snooker together, sometimes running back to back centuries against each other. One day I noticed him looking at the cue ball last during a shot. I asked him why he did that. He said he always looks at the cue ball last. I was shocked! Bill was one of the best Snooker players in Manitoba .......".