Contextual awareness based on eye motion tracking by an eye-mounted system

A method for taking action in response to a user's context performed by a system comprising an electronic contact lens containing eye tracking sensors and an outward-facing imager, the method comprising:

• collecting, by the eye tracking sensors, eye tracking data while the electronic contact lens is worn on an eye of the user, and while the imager is turned off or run in a low power mode;
• processing the eye tracking data to track eye movements of the user over time;
• detecting a pattern in the user's eye movements corresponding to the user's eye looking at a plurality of different positions in an environment of the user, where the pattern is indicative of the user looking at a particular type of object within the environment of the user;
• and
• based on the detection of the pattern indicating that the user is looking at the particular type of object, causing performance of a predetermined action comprising activating the imager to capture one or more images of the user's environment containing the object and performing an image processing function corresponding to the type of the object.