OK, so I know that I can probably just ask at Specsavers or Boots, but what's the harm in asking here and seeing if anyone has the same issue?
My long-distance glasses work great at distances of more than about 3 feet, and my reading glasses work well for distances up to about 2 feet, but there's this area in between, which unfortunately is the distance from my eyes to my PC monitor at my desk (about 2 and a half feet) where neither pair of glasses works perfectly and things are a bit blurry in both sets of glasses. Can I ask for a third set which works at this in-between distance, or is this just something I'll have to get used to? Thanks for all replies!