Specsavers used to collect them pre-covid they would then be cleaned, the prescription checked and sent to VisionAid overseas. It's a charity that Specsavers work closely with and many of their staff volunteer to go out to countries where getting a sight test and affordable glasses is a rarity.
I have watched a very moving video of the work that is done and the impact a pair of glasses has on adults and children alike.
Hopefully, Specsavers will once again accept old glasses in the not too distant future so hold onto them for now. Varifocals, bifocals and single vision glasses are all welcome but they dont want the cases.