Many people aren’t easily able to tell what’s causing their eyes to be red, itchy, watery, or dry. It’s important to know the real cause in order to get the correct treatment. Allergies are the most likely cause, but often get confused with pink eye, a highly contagious disease, especially in children, that must be treated differently. If your eyes are red because they’re dry, your eye doctor can prescribe special eye drops that help lubricate them. Don’t let your eyes stay red and dry for very long, as it could harm your vision.