User blog comment:PeaceLoveAgentP/Question Blog!!!!!!/@comment-3395649-20130501024440/@comment-4353345-20130501044346

Oh, I almost forgot. Vampires' eyes are sort of a measure of their hunger level. The more amber/gold color in their eyes, the less they need to eat. The more red in their eyes, the more they need to eat. However, if their eyes are bright red, they still have energy and are healthy. Slowly after turning red, their eyes phase to black. When black, they desperately need food, otherwise they will lose consciousness until blood is consumed.