Hi BlueEagle, appreciate your concerns with regards to this.
Im also keeping my fingers crossed as I've always wanted to be a pilot, except for my shortsightedness (>500).
Have asked around (friends in the cadet scheme, searched forums), from what I gathered so far, seems like CAAS/SQ treats Lasik cases on a case by case basis, and the general consent is that 1 year after the Lasik, they might consider your application. So for me, although it might be a long shot, is a risk worth taking in order to fulfil my lifelong ambition.
And I was thinking of taking private flying lessons, which I hope will boost my chances in being selected too. Anyone knows if this will help?