Objective To explore the more effective method for branch retinal vein occlusion( BRVO) with macular edema by analyzing the laser coagulation and intravitreal injection of triamcinolone acetonide combined with laser coagulation in different periods. Methods Seven-five BRVO patients( 75 eyes) included in this research, and divided into five groups, 14 cases in group A with duration of 3- 6 months, 16 cases in group B with duration less than 3 months,group A and B were treated with macular and superior-temple...