The basic insurance does not include a reimbursement for glasses, but various supplementary insurance policies do. Have you not yet used your reimbursement, while you actually wanted to? You have until the end of December.
Check in advance about your coverage for glasses or contact lenses. An amount is often available every other year, but this can vary per supplementary insurance. The amount also varies. Check your policy to see what you will be reimbursed.
It is immediately a good time to have your eyes measured and checked, so that you can start the new year with glasses in the right strength. And secretly it's just nice to have a hip new frame.
