Didier Ducournau (Nantes, France)

If the goal of a vitrectomy is to remove the vitreous as much as we can, we must use machines which allow us to remove the anterior hyaloid and the posterior hyaloid. High-speed cutters and shaving techniques have been invented to decrease the iatrogenic retinal tears risk. In fact, low cutting frequency is dangerous if the operator is not controlling the aspiration flow. But, shaving technique leaves much more adherent posterior hyaloid (with an increased post-op PVR risk) than peeling technique. This is why the author highlights the advantages of machines with aspiration flow control and simultaneous and independent control of aspiration flow and cutting frequency which both allow the operator to achieve more complete and more secure vitrectomy.