While at mid of sleep during night my right eye ball started burning like hell, fluid was flowing from the eye and the nerves near eye ball was fully red. The burn was so severe that I had to get up and put some water in eyes, but that was not the solution for it. After that I couldnt sleep due to pain/burn. Though the burn lessen down after hours, but still I am having some pain. What is the reason and what should I do?