Fig. 5: In vivo eye-machine interaction and biocompatibility evaluation.
From: Frequency-encoded eye tracking smart contact lens for human–machine interaction
a Schematic illustration of the rabbit’s eye movement controlling the robot vehicle wirelessly. The VNA detected the signal of SCL wireless through the reading coil and transferred to the personal computer (PC), and the robot vehicle was controlled wirelessly through Bluetooth communication by PC. b Photograph and OCT image of the rabbit eye with SCL. c Trace of the rabbit’s eye movement. d Photographs of rabbit eye and robot vehicle at specific moments. The insets highlight the location of the reading coil’s inner edge and the SCL’s 4 tags and the red dots indicate the center of the reading coil. e Representative slit lamp photographs, fluorescence images, and OCT images of the rabbit eye after 24-h wear of SCL compared to 24-h wear of bare lens. f Representative slit lamp photographs, fluorescence images, and OCT images of the rabbit eye after 8-h daily wear of SCL over 1 week compared to the naked eye. g, h Representative micrographs of the rabbit’s cornea with H&E staining after 24-h wear of SCL and after 8-h daily wear of SCL over 1 week. i Central cornea thickness reduced after 24-h wear of SCL and bare lens due to lens’ compression.
