Understand there are a few expats flying in Vietnam (VNA and VJ) who have had laser eye surgery. From what I gather, depends on where done (US/Canada/France) the degree of correction, and the paperwork (very important) you bring along.
In China, beware! What might pass muster in Beijing, might not pass in Shanghai or Guangzhou, the CAAC has different administrative regions and this can nuance their interpretation of the lightly worded regs, but that is not something uniquely Chinese, happens everywhere. But... Lots of paperwork certainly helps and if you can get it translated, well that's extra points.
