[Treatment of preretinal retrohyaloidal hemorrhage: value of early argon laser photocoagulation].

Within the first three or four days after occurrence of a premacular subhyaloidal hemorrhage, the posterior vitreous boundary layer may be lacerated by argon laser coagulation in such a way that the blood flows into the vitreous body, where it is absorbed within a few weeks. Older premacular hemorrhages under an intact vitreous boundary layer, typically green-white in color, have to be treated by more invasive vitreosurgical procedures.