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As you go about your life, the light you see generates electrical signals in your eyes. These signals cause a reaction in the brain, and it can be quite intense even in everyday light. While everyone squints in the bright sun, some people - often those with migraines, cluster headaches, brain trauma or dry eyes - are extremely sensitive to even small amounts of light. They end up spending much of their lives isolated in a dark room or wearing sunglasses to try to keep their pain from getting even worse. Fortunately, Prof. Rami Burstein has discovered a precise narrow band of natural light that lets you see and function without the discomfort of everyday light: the Allay band of light.