Fig. 6. Fresh submacular blood displaced from the macula with an intravitreal gas bubble injection. A. Air or gas is injected into the vitreous cavity. B. The patient is then placed in the face-down position such that the bubble slowly pushes the blood into the inferior fundus. The blood remains in the subretinal space but is displaced from the macula. Some surgeons precede the gas bubble with an intravitreal injection of tissue plasminogen activator in order to help lyse the blood clot.