1. A gaming machine comprising: an external cabinet defining an interior region of the gaming machine, the external cabinet adapted to house a plurality of gaming machine components within or about the interior region; an eye detection system located within or about the external cabinet, the eye detection system configured to do the following: locate an eye position of a person near the gaming machine; generate corresponding image casting information that describes the eye position relative to a position of the gaming machine such that an image may be projected from the gaming machine to a retina of the person near the gaming machine; track the eye position; and generate updated image casting information according to a predetermined refresh rate; and a retinal image system located within or about the external cabinet, the retinal image system comprising a projection system, the retinal image system configured to do the following: generate the image for the person; receive image casting information, including updated image casting information, from the eye detection system; project, via the projection system, the image onto the retina using the image casting information, the projected image being confined to an area of the person's eyes; and change a direction of image projection according to the updated image casting information.