An apparatus (100), comprising a transparent capacitive sensor (102) a body (101) configured to support the transparent capacitive sensor in front of an eye (112) of a user (110) and a driver (106) configured to receive signals from the sensor and to determine eye movements based on the received signals, wherein the sensor (102) is configured to detect movement of the eye (112) based on electrostatic effect caused by a bulge of the cornea of the eye (112). The apparatus may be wearable by the user like eyeglasses.
