A portable device for the optical signal transmission from and to the human eye, in which it is proposed that a rod-shaped housing (1) is provided, on the two end regions of which at least one emitter (3) and / or detector of electromagnetic waves is arranged (3) and / or detector, as well as a control unit (8) which is connected to the at least one emitter (3) and / or the emitter (3) and / or the emitter (3) Or detector, are provided. The invention provides a portable device for the optical signal transmission to and from the human eye, which can be worn with a high wearing comfort in a discreet manner in the vicinity of the head and, in particular, allows a uniform wearing of the device with commercially available spectacles. Furthermore, the handling, storage and transport of corresponding devices are greatly facilitated.
