[Haemodynamics in retinal branch vein obstruction (author's transl)].

A branch vein obstruction in a 44-years-old woman recovered with in 7 months without any clinical residuals. The evaluation of fluorescein angiograms performed during thrombosis and after recovery showed significantly reduced retinal circulation times in around the thrombosis. The results indicate an increased blood flow ranging between 50 and 200% around the obstructed area of the retina. The haemodynamic situation of the retinal circulation during branch vein obstruction and its therapeutic consequences (photocoagulation) are discussed.