DS (1) had day surgery last Friday for an endoscopy. He had gas to put him to sleep for the procedure. He seemed fine afterwards apart from vomiting a few hours after he woke up. But from about Monday/Tuesday I've noticed that he's quite markedly cross-eyed when trying to focus on something about one metre away. It's not the same eye that's not straight each time iyswim. I could be being irrational but it seems like a big coincidence that he's suddenly developed an eye problem a few days after an anaesthetic, and I'm really worried that the anaesthetic has affected his brain in some way.
Wonder if anyone could give any advice/reassurance?