Vizilite Plus with TBlue is oral lesion identification and marking system that is used as an adjunct to the conventional head and neck examination. It is comprised of a chemiluminescent light source (Vizilite) to improve the identification of lesions and a blue phenothiazine dye to mark those lesions identified by Vizilite. ViziLitePlus with TBlue is designed to be used in a patient population at increased risk for oral cancer.