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).
