Abstract：ObjectiveTo explore the morphological classification for retinal neovascularization of diabetic retinopathy and the impact on retinal photocoagulation.MethodsThe total of 587 eyes with retinal photocoagulation in 362 cases with diabetic retinopathy were received from January 2009 to November 2012 in our hospital.The morphology,area and distribution of the neovascularization were acquired by Zeiss Visucam angiography machine and they were divided into 4 types:occult,mild,medium and severe.The occult cases were received with the treatment of panretinal photocoagulation and other cases were received with the treatment of extra panretinal photocoagulation.The parameters for retinal photocoagulation,visual acuity before and after the treatment,intra ocular pressure and dynamic changes of the fundus were recorded.The followup visits were given during 9～12 months and then the response to retinal photocoagulation and the prognosis of different types of neovascular were summarized.Clinical curative effect was analyzed by chisquare test.ResultsThe effective rate of retinal photocoagulation for different types of neovascular:Maintained or improved visual acuity:（1）occult:77.3%;（2）mild:56.7%;（3）medium:41.0%;（4）severe:17.2%.Neovascular regression and decreased nonperfusion areas:（1）occult:42.3%；（2）mild:34.9%;（3）medium:16.9%；（4）severe：5.4%.ConclusionsThe prognosis of diabetic retinopathy after retinal photocoagulation is related to different types of neovascular.It′s very important to choose retinal photocoagulation in time for patients with diabetic retinopathy to ensure visual acuity maintainting.
