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