·AIM:To investigate the effects of posterior Tenon capsule injection of trimacinolone combined with surgery on retinal detachment associated with choriodal detachment.·METHODS:Eighteen patients were studied.The clinical data,preoperative management,operative methods,therapeutic effects and follow records were analyzed.·RESULTS:Fifteen cases were completely succeeded,1 case failed,2 cases redetached after the follow-up of 3-12 months.The total successful rate was 83%.IOP and vision were significantly improved.·CONCLUSION:The successful rate of retinal detach-ment associated with choriodal detachment is lower than that of the general retinal detachment.Posterior Tenon capsule injection of trimacinolone is an effective and safe method for rhegmatogenous retinal detachment associated with choroidal detachment,it can improve the success rate.·