Purpose To evaluate the therapeutic effect of laser-induced chorioretinal venous anastomosis for retinal vein occlusion　(RVO)． Methods The investigation included 28 consecutive patients　(28 eyes) with RVO．The non-ischemic group 18-cases　(18 eyes) we re tre ated with the krypton red laser to induce chorioretinal venous anastomosis， the ischemic group underwent the same therapy and the grid or scattertype photoco agulation at the same time． All of the eyes were followed up for more than 5 mo nths， and with an average period of 6.6 months． Results Seven cases　(7 eyes， 38．9%) of the non-ischemic group created successful chorioretinal venous anastomosis， with mean improvement of 4．43 plusmn;0．7 8　standard deviation lines of best corrected visual acuity compared to0.19 plusmn;0.67 lines for 11 eyes with unsuccessful anastomosis　(P lt;0.001)．None of the seven eyes developed to ischemic state． Four of the 11 eyes with unsuccessful anastomosis converted to ischemic type (36.4%) ．Two cases of the ischemic group created successful anastomosis with improvement in visual acuity． The other cases had no change in visual acuity． Conclusion Laser-induced chorioretinal venous anasto mosis is a new therapeutic method for RVO， especially for nonischemic type and successful anastomosis can decrease the conversion rate of the vein occlusion to an ischemic state． (Chin J Ocul Fundus Dis, 2001,17:8-11)

Citation： ZHANG Fan,LIU Zheli. Laser-induced chorioretinal venous anastomosis for retinal vein occlusion. Chinese Journal of Ocular Fundus Diseases, 2001, 17(1): 8-11. doi: Copy