There is only one scenario in ophthalmology when literally seconds count before irreversible loss of vision occurs: an expulsive type, arterial hemorrhage. Even if this is less common in vitrectomy than in an open-globe type of surgery, the risk is not negligible, and every (VR) surgeon must know how to recognize and manage it. More frequent is the occurrence of a retinal tear, which, if unrealized and untreated, can rapidly lead to RD. Iatrogenic trauma to the lens is another complication that less experienced surgeons occasionally cause.