A method comprising causing rendering of information on a display, comprised by a head mounted display, in a non-blink display power mode, receiving ocular sensor information from at least one ocular sensor, the ocular sensor information indicating eye activity of a user of the head mounted display, determining a user blink initiation of the user based, at least in part, on the ocular sensor information, transitioning from the non-blink display power mode to a blink display power mode in response to the determination of the user blink initiation, determining a user blink termination of the user based, at least in part, on the ocular sensor information, and transitioning from the blink display power mode to the non-blink display power mode in response to the determination of the user blink termination is disclosed. The ocular sensor may comprise electrooculography information.