Hemodynamic characteristics of ocular artery in proliferative diabetic retinopathy

Objective To discuss the hemodynamic characteristics of ocular artery(OA)in proliferative diabetic rctinopathy(PDR)by the color doppler flow imaging (CDFI).Methods 56 PDR (56 eyes)were selected randomly, among them group A included 30 PDR (30 eyes)with retinal detachment, group B included 26 PDR (26 eyes)without retinal detachment;in group C 14 ischemic ophthalmopathy (14 eyes)included 7 CRAO(7 eyes)and 7 AION(7 eyes);controi group included 15 normal persons(30 eyes).The hemodynamic parameters of OA in four groups were recorded.Results There was statistical difference(P 0.05)both in PSV and RI between group A, B and other ischemic ophthalmopathy respectivaly, in PSV between group A, B and control group respectively.Conclusion Resistance of peripheral circulation increases and perfusion of distal tissue is insufficient in OA of patients with PDR which may be associated with ipsilateral internal carotid artery stenosis and ischemic cerebrovascular diseases when PSV of OA decreases. Key words: Proliferative diabetic retinopathy; Color Doppler flow imaging; Ocular artery; Hemodynamic;  Ischemic ophthalmopathy