I am not having much luck with these extended-range multifocal computer/reading glasses.
Once, the left lens fell out & vanished because a screw loosened itself and also fell out. The spectacle shop replace the lens after ten days.
Then one arm came off because the retaining screw sheared off. They were unable to effect a repair & replaced the entire frames with a new set under warranty.
This meant that of the original glasses, only the right lens remained.
That fell out 30 minutes ago, disappearing screw problem. At least I haven’t lost the lens this time.
So I’m heading off for yet another repair.