Abstract: A system includes an ocular device (10) for deployment in or on an eyeball, and an external device (12). The external device has an electrically-actuated energy-transmitting component (16) for mounting in proximity to the eye, and preferably on an external surface of an eyelid of a user so as to move together with the eyelid. Driver circuitry (22) actuates the energy-transmitting component to transfer energy wirelessly to an energy receiver of the ocular device. Some implementations employ near-field resonant coupling between the external device (12) and the ocular device (10), and support data transfer therebetween, optionally via modulation of the transferred power.