q: The lenses in my glasses used to get dark in the sunlight but they don’t seem to work any longer, what’s going on? a: It’s rare, but sometimes photochromic lenses degrade over time and can’t be fixed. If you bought them in the last couple of years they might still be under warranty for replacement. If you have questions about old or new glasses, stop by Mosaic Optometry, we would be glad to help!