Fig. 5: Magnetoreceptive contact lens for augmented reality applications.

a Concept image showing how magnetically responsive interaction layers could be used for, e.g., zooming in or out in augmented (virtual) environments. b Optical micrograph depicting the transparency and mechanical compliance of the magnetoreceptive mesh applied on a contact lens. c–e Selection of a snapshot image using magnetoreceptive contact lens. Selection marker is moved over the field of view (c) using spatial reconstruction of the magnetic trigger over the lens area (d). e EMRT signal range is divided into three sections: no input detected (white symbols); marker selected (orange symbols); snapshot selected (red symbols). The error bars depict the uncertainty of the EMRT signal magnitude based on the data shown in Fig. 2. f–i Digital magnification of the selected snapshot. g Zoom-in motion of a magnetic stylus around the perimeter of the magnetoreceptive contact lens. f, h Representative frames of Supplementary Movie 8 revealing a sequentially zoomed-in picture based on the interaction depicted in (g). i Corresponding dependency of reconstructed angular position φ of the magnetic stimulus.