Dynamic study of ocular hemodynamic changes on DR before and after panretinal photocoagulation

AIM: To explored the treatment effects of retinal laser photocoagulation and the applications of color Doppler flow imaging(CDFI)in the diabetic retinopathy.METHODS: We collected 60 patients(120 eyes)with diabetic retinopathy(Ⅲ～Ⅳstage)from February 2013 to February 2014 in Anyang Eye Hospital admitted in fundus disease department. The health control(HC)group of 55 normal people was established simultaneously. Ocular blood flow velocity of the 55 normal people(110 eyes)and the 60 patients(120 eyes)was examined by CDFI of central retinal artery(CRA)and posterior ciliary artery(PCAs)using the PHILIPS HD6. Peak systolic velocity(PSV)was recorded. The examinations of CDFI, electroretinogram(ERG)and the vision were performed in pre-operation, 1,7d, 1, 3 and 6mo postoperatively. RESULTS: Compared the PSV of CRA of the DR group before and after photocoagulation to the data of the HC group, there was a significant difference(P