While most light—like white, blue, red and amber—makes migraines worse, green light was found to be much gentler and caused far less discomfort. The researchers discovered that green light interacts with the eyes and brain in a way that is less likely to trigger pain. These findings suggest that using green light could be a helpful way to manage migraines.
Source: Migraine photophobia originating in cone-driven retinal pathways, published in Brain
