My prescription sunglasses were useless after my LASIK surgery.
Instead of throwing out the pair, I popped out the lenses, and ordered a non-prescription set from Sunglass Fix.
They’re an Australian-based business that has a “cut on demand” lens service. They have the frame dimensions of thousands of frames and manufacturers, making it super easy to find the right lens/frame combo.
If you still like your frames, but perhaps the lenses are scratched, they provide a great low cost way to get a “new” pair of glasses; without the waste, and without the cost.
I’m a big fan of businesses like this where the idea just makes sense.