A method comprising: with a user interface of an auxiliary device (105, 320), prompting a user to perform a first viewing action with an eye-mountable device (100, 200) disposed in or on an eye of the user; sending to the eye-mountable device (100, 200) first signals indicating a first time for the first viewing action, wherein, based on the first signals, the eye-mountable device (100, 200) generates first configuration information (500, 510) indicating a correspondence of a characteristic of the first viewing action to a first state of the eye-mountable device (100, 200) during the first time, wherein a first operational mode of the eye-mountable device (100, 200) is based on the first configuration information; with the user interface, prompting the user to perform a second viewing action with the eye-mountable device (100, 200); and sending to the eye-mountable device (100, 200) second signals indicating a second time for a second viewing action, wherein, based on the second signals, the eye-mountable device (100, 200) generates second configuration information indicating a correspondence of a characteristic of the second viewing action to a second state of the eye-mountable device (100, 200) during the second time, wherein a second operational mode of the eye-mountable device (100, 200) is based on the second configuration information; characterized in that prompting the user to perform the first viewing action includes prompting the user to focus on an item while the eye-mountable device (100, 200) successively provides different levels of accommodation, the method further comprising prompting the user via the user interface to identify a preferred one of the different levels of accommodation. with a user interface of an auxiliary device (105, 320), prompting a user to perform a first viewing action with an eye-mountable device (100, 200) disposed in or on an eye of the user; sending to the eye-mountable device (100, 200) first signals indicating a first time for the first viewing action, wherein, based on the first signals, the eye-mountable device (100, 200) generates first configuration information (500, 510) indicating a correspondence of a characteristic of the first viewing action to a first state of the eye-mountable device (100, 200) during the first time, wherein a first operational mode of the eye-mountable device (100, 200) is based on the first configuration information; with the user interface, prompting the user to perform a second viewing action with the eye-mountable device (100, 200); and sending to the eye-mountable device (100, 200) second signals indicating a second time for a second viewing action, wherein, based on the second signals, the eye-mountable device (100, 200) generates second configuration information indicating a correspondence of a characteristic of the second viewing action to a second state of the eye-mountable device (100, 200) during the second time, wherein a second operational mode of the eye-mountable device (100, 200) is based on the second configuration information; characterized in that prompting the user to perform the first viewing action includes prompting the user to focus on an item while the eye-mountable device (100, 200) successively provides different levels of accommodation, the method further comprising prompting the user via the user interface to identify a preferred one of the different levels of accommodation.