And my vision's been pretty constant for the last ten years (ranging in the 1.0-and-1.25 to 1.0-and-1.50, but never enough for an optician to say "you'd notice if you changed your prescription") - I've changed because of damage, rather than changing vision, so I'm not sure whether it's because I need something different for reading.
I have a pair for VDU work at the office; I suspect they're little different from my other pair. But the normal day-to-day are too strong for reading with, just, and I have to look down (rather than tilting my head) when reading, because otherwise, my neck strains.
Bah.