Hemodynamics in cervical and retrobulbar vessels in patients with asymmetric diabetic retinopathy / 中国糖尿病杂志

ABSTRACT

Objective To investigate the relationship between hemodynamic changes in cervical and retrobulbar vessels and asymmetric diabetic retinopathy.Methods Color Doppler imaging(CDI) was used to quantitate diameter(D),peak systolic velocity(PSV),end diastolic velocity(EDV) and resistance index of the common carotid artery(CCA),the internal carotid artery(ICA),the ophthalmic artery(OA) and the central retinal artery(CRA),to quantitate diameter,velocity of central retinal vein(CRV),and to check carotid atherosclerosis in 12 patients with asymmetric diabetic retinopathy.Results The detection-rate of CCA and ICA atherosclerosis plaques was significantly increased in backgroud DR(41.7%)compared with that in proliferation DR(66.7%).There was a significant decrease in both PSV and EDV in OA in background diabetic retinopathy(BDR)(20.02±5.32 cm/s,5.26±2.15 cm/s) compared with PDR(27.23±12.20 cm/s,6.23±2.67 cm/s,P<0.05).There was a significant decrease in both PSV and EDV in CRA in BDR(6.44±1.78 cm/s,2.03±1.49 cm/s) compared with PDR(8.41±2.05 cm/s,2.66±0.67 cm/s,P<0.01).Conclusion The imbalance of perfusion in two eyes in diabetic patients might be one of the causes resulting in the asymmetric diabetic retinopathy