You can recycle used glasses by putting your used glasses up for sale and earn a penny. You can also buy and recycle used glasses. Either you find a pair of used glasses with ground lenses and with your vision defect OR you buy a used spectacle frame and put in a pair of new glasses adapted to your vision defect. You save big money in both cases. Here you will find an optician https://optikerforbundet.se/sok/ who can help you with an eye examination and new glasses for your used frames. They can also help you customize the reusable arch and give tips on renovations.