I tore a contact this morning.
This is less of a huge world-ending problem than it would have been the last time I wore contacts, because those were more or less eternal and cost several hundred bucks a pair. These are specifically designed to give out after a month, so I've got a bunch of them.
I just don't have them here, while I'm in the far north. (Not actually all that far, by one measure. Maybe fifty km north of the centre of British Columbia. Then again it's a twelve-hour drive to get here from Vancouver, so maybe it's just that BC is Way Too Big.) So I'm wearing my four-year-old glasses.
There's a mild but definite difference in my vision. Far-away things get fuzzier sooner than I expect them to. Not to mention the lack of peripheral vision, which I'd gotten to the point of taking for granted.
And I seem to be getting a headache. There's any number of environmental factors that could be causing that, but "minor change in vision prescription" seems to be the most likely culprit.
Might be time to start carrying a spare set of contacts with me when I travel.
(I've not gotten new glasses partly because they're expensive, and partly because I hate getting frames fitted to my face. It always involves several trips back to the optometrist and complaints of an earpiece that's rubbing weird right in front of my ear, or pushing into my skull behind my ear, or something like that.)