·AIM:To investigate retrobulbar injection of triamcinolone acetonide for macular edema.·METHODS:Totally 48 eyes of 48 cases of macular edema were selected,26 cases as experimental group and 22 cases as control group.Both groups were undertook argon green laser grid pattern photocoagulation for macular edema,the experimental group followed by retrobulbar injection of triamcinolone acetonide 20mg/0.5mL,the control group were not injected.·RESULTS:Visual acuity were improved after treatment in two groups,during treatment 7 days visual acuity in the experimental group improved in 6 cases.After treatment 1 month,3 months visual acuity improved in two groups,compared the same period,which had a significant difference(P<0.05).Macular retinal thickness measurement:after treatment 7 days,1 month,central macular thickness of both groups measured by OTC were significantly thinner than before,macular edema absorption was obvious in 3 months by FFA.·CONCLUSION:For macular edema,argon green laser combined with retrobulbar injection of triamcinolone acetonide is effective with rapid recovery.·