The invention relates to a surgical instrument, in particular a vitrector, comprising an outer tube and an inner tube. Both tubes functionally interact. Said 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 said type of material or said type of material comprises 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.
