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; and b. A processor adapted to cause the camera system to capture the eye-image light a plurality of times, wherein an interval of time between the plurality of times is based on a one of a plurality of reasons for capturing the eye-image light.