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).

Abstract: A surgical instrument (101) is made available, in particular a microsurgical instrument, with a rod-shaped or sleeve-shaped portion (103) that comprises a proximal end (113) and a distal end (111). The rod-shaped or sleeve-shaped portion (103) is made of a transparent ceramic and has, at its proximal end (113), an attachment piece (117) for an optical fiber output (119) which allows light emerging from the optical fiber output (119) to be introduced into the transparent ceramic. The transparent ceramic of the rod-shaped or sleeve-shaped portion (103) is provided with a non-transparent coating (123), except in a light outlet area (125).