The present invention relates to an electronic device (10) comprising: a frame (100) configured to be worn on a head of a user； a first light emitter (142) mounted on the frame (100) and configured to illuminate a first eye of the user, wherein an intensity and a spectrum of the first light emitter (142) is adjustable； a second light emitter (144) mounted on the frame (100) and configured to illuminate a second eye of the user, wherein an intensity and a spectrum of the second light emitter (144) is adjustable； and a controller (112) configured to control the intensity and spectrum of the first and second light emitter (142, 144).
