1. An eye-imaging system, comprising: a. A camera system positioned in a head-worn computer, wherein the camera system is further positioned to capture eye-image light that originates as reflections from an eye of a user; b. An structured-light light-source positioned in the head-worn computer such that it irradiates the eye of the user with a pattern of light to produce at least a portion of the reflections from the eye of the user; and c. A processor adapted to analyze changes in the pattern of light through a comparison of the pattern of light with the pattern of light as reflected from the eye of the user, wherein the changes are interpreted as positional changes of the eye of the user.