Abstract: The invention is directed to a method of operating an ophthalmosurgical system which includes a console for accommodating an irrigation fluid vessel containing irrigation fluid and a cassette, insertable into the console, for directing the irrigation fluid to a surgical instrument for an eye to be treated. An irrigation fluid flow path leads from the irrigation fluid vessel to the cassette and to the surgical instrument. A first fluid pump includes a first pump chamber having a first volume and a first drive chamber separated therefrom by a first elastic partition and having a second volume. A second fluid pump is arranged in parallel to the first fluid pump and includes a second pump chamber having a third volume and a second drive chamber separated therefrom by a second elastic partition and having a fourth volume.

Abstract: The invention is directed to an ophthalmosurgical system which includes a console for accommodating an irrigation fluid vessel containing irrigation fluid and a cassette, insertable into the console, for directing the irrigation fluid to a surgical instrument for an eye to be treated. An irrigation fluid flow path leads from the irrigation fluid vessel to the cassette and to the surgical instrument. A first fluid pump includes a first pump chamber having a first volume and a first drive chamber separated therefrom by a first elastic partition and having a second volume. A second fluid pump is arranged in parallel to the first fluid pump and includes a second pump chamber having a third volume and a second drive chamber separated therefrom by a second elastic partition and having a fourth volume. The first volume or the third volume has a magnitude within the range from 1 to 25 cm3.

Abstract: A device for treating eyes, the device having a lance-like housing which extends along a longitudinal direction (L) and can be inserted into an area of the eye to be treated. The device further includes at least one cutter element, which is arranged at least partially inside the housing and is movable relative to the housing. The housing has an opening through which the cutter element can contact the area of the eye to be treated. The apparatus preferably includes a drive for generating the movement of the cutter element. The cutter element is configured to be rotatable or pivotable with respect to a predefined axis extending in or oblique to the longitudinal direction (L).