There's a first time for everything, and I did something daft today that I've never managed before.
I've been wearing contact lenses for many years - no, not the same pair, thank you - and they're the sort you have to take out at night. This morning, I was giving them an extra rinse before putting them in, and I guess it upset my normal routine a bit. Anyway, I put the left one in, no problem, then fiddled about with the other one, and put that one in... my left eye. Didn't notice for a few seconds, until I looked up and thought things weren't terribly well focused. I took the lens back out, and now I had two lenses in my hand, stuck together! After much dunking and gentle pulling apart, I finally managed to get them separated, and then back into my eyes again - one in each this time.
Ever since, I've had a low-level headache, not enough to be a migraine, but enough to be off-putting, and I'm wondering if, despite my best efforts, I've managed to get my left and right lenses swapped over. Luckily, my lens prescription is a fairly low number (ie I'm not particularly short-sighted), and the two lenses, though different, only differ by 0.25 whatever it is they measure these things in (diopters?). Nonetheless, something's not right, and I feel as if my eyes are having to work harder than they ought to.
I don't have glasses, and I'm loath to chuck these lenses just yet, as they're monthly, and September is too far off!