I started reading Wikipedia, and one of the things they said was that auras generally last less than 60 minutes. Sure enough, in a bit under an hour my vision returned to normal, and around the same time I started to get some pain which was completely localized to the right side of my head. It really wasn't that bad, particularly after I took some Excedrin, but as I was also nauseated and I wasn't quite sure what course the thing would take (i.e. whether it would get worse) I decided to go home from work. As it turned out, after a nap of a couple of hours I was basically fine.
One could say that this ought to disturb me, and if it starts to become a regular occurrence it probably will. But my reaction this time was “hey, that's kind of neat”, as I managed to identify it (echoing my self-diagnosis of diabetes many years ago), it followed the pattern to a tee, and it really wasn't that bad anyway.