Abstract: The invention includes a protective eye device for an oral treatment patient including an eyepiece having bridge portions that form a seal with the nose. The bridge portions are a fulcrum between attachment portions that extend downwardly and outwardly from the bridge portions, and upper portions disposed above the bridge portions. A retaining member is coupled to the attachment portions below the fulcrum such that tension on the retaining member causes the attachment portions to extend toward the face and facilitates the sealing relationship between a lower rim and a middle surface of the face between the eyes and mouth. The tension on the retaining member simultaneously causes the upper portions to extend away from the face, and facilitates the spatial relationship, or a gap, between the forehead and an upper rim. The invention also includes a method for shielding the eyes of a patient.