Related to this but with at a slight tangent:
Q. Why do your spectacle frames (whether new or used) which are getting lenses have to be sent to the lens people?
Surely it could be arranged that a digital template (of every frame ever manufactured) be held in the lens manufacturers' digital library, and the lenses shaped to fit. The correctly shaped lens would come back to the optometrist, who would fit the lens into the spectacle frame.
From the discussion to this point, it is obvious that optometrists are often loathe to reuse frames. Now I understand that sometimes frames are distorted, or misshaped from use. Surely the optometrist (or the dispenser who is probably not an optometrist) could see if the frames are in good condition or not. If the frames are really distorted, then maybe they are either in need of replacement, or they can be sent off to have the lenses fitted.
If the old frames were in good condition, the client could wear the old script to the optometrist, and walk out with the new script, instead of possibly being without spectacles for up to two weeks. Obviously, this would eliminate the need to buy new spectacle frames just to have prescription glasses to wear. It would mean that people only need to buy frames when THEY chose to.
Perhaps, Choice could do a shadow shop of spectacle dispensers and see if they are attempting to pull the wool over our eyes by refusing to reuse shoppers' perfectly good frames?