Kendall's eyes or the A's' pitchers?

Corey Provis may not have done his homework on Jason Kendall (though I'm not sure because it's arguing from absence). He mentioned that Kendall had eye surgery before last season, and credited this for Jason's (vastly) improved CS rate in 2008. In fact, the Brewers weren't spooked by Kendall's awful CS rate in Oakland; the team's statistician noted that Oakland's starting pitchers were unusually poor at holding runners on first, and/or releasing the ball soon enough to prevent a huge jump. The theory was that Kendall's CS would improve once he was catching a different rotation. Obviously eye surgery helped, too -- but it's hard to believe the Brewers would have relied on that alone, when its outcome was still uncertain.