@lisalucier TheraSpecs offer several lenses which block certain types of light. I got their multi-light blocking lenses, which help me be able to work on my computer without getting migraines. I still need to take breaks and I keep my desktop computer brightness turned very low, but I can now tolerate desktop computer work, something I could not do at all until I got the TheraSpecs. Your optometrist can order the l lenses for prescription glasses, too.