The invention relates to a surgical instrument, in particular a vitrector comprising an outer tube and an inner tube. Both tubes functionally interact. The surgical instrument is characterized in that the outer tube and/or the inner tube is made from a light conducting material or is coated with the type of material or the type of material comprising a light conducting fiber, core or similar, and is used to conduct light from the proximal end to the or into the area of the distal end.
