My husband got krazy glue on his new glasses. He has plastic, progressive lenses with the transition from sunlight to indoors. We used acetone after practicing on dollar store readers with plastic lenses. It worked great. Wet a paper towel with acetone. WORK FAST! Rub acetone over affected area. Rinse immediately. Repeat as nec. As I said work fast. You don’t want that acetone on there for any legnth of time. Good luck!