I went to the optician's for my checkup yesterday, and she took one look at my lenses and started muttering Dark Imprecations about their fit, or lack of same, and the effect that that was having on my eyesight... so I'm Speccy Four-Eyes Bibliogirl until next Wednesday, when she'll take another look and try to fit me for a new pair once my eyes have had a bit of a rest. Apparently the stuff these lenses (I wear gas-permeables) are made of is not so durable as some of the older sorts, so they tend to warp and retain more protein off one's eyes. Luverly. (They'd had the effect of worsening my prescription temporarily by about -1D in both correction and astigmatism (spherical and cylindrical, whatever). Given that I start out somewhere in the -7.5D region, this isn't good, but I'm told that it oughtn't to be a long-term change.)
It could be worse; at least I have fairly decent glasses at the moment, and they're in a relatively current prescription so I don't have to worry about not being legal to drive or anything like that.
(For our American viewers: I regret I can't find a conversion chart between dioptres and the 20/x notation for vision. -7.5D is the sort of level where your optician says "What's the lowest line you can read on the eye chart?" and you reply "Huh? There's a chart over there?" Well, maybe not quite that bad, but anything below the E at the top is pretty much hopeless.)