Disclosed is a patient interface (2) for affixment on onto a patient eye, said patient interface (2) including:- - a negative-pressure cavity (20) designed for fluidic coupling to the patient eye；- - a first negative pressure interface (22a) with a first negative pressure aperture (22a') for fluidically coupling the negative-pressure cavity (20) to a negative-pressure device (1) to charge the negative pressure cavity (20) with a negative pressure；- - a second negative pressure interface (22b) with a second negative pressure aperture (22b') for fluidically coupling the negative-pressure cavity (20) to the negative-pressure device (1) to charge the negative cavity (20) with a negative pressure；wherein the first negative pressure aperture (22a') and the second negative pressure aperture (22b') are arranged in a wall of the negative pressure cavity separate from and in close vicinity to each other.
