Disclosed is a method and a head mountable device for measuring eye movement of a user, the head mountable device comprising: a frame a camera system comprising a first camera, wherein the camera system is configured to obtain a first set of images of a first eye of the user a projection system for projecting a visible object in a field of view of the first eye when the user wears the head mountable device. The projection system is configured to perform a movement of the visible object relative to the head mountable device. The projection system comprises a first projector configured to project a first projection comprising the visible object.
