糖尿病视网膜病变患者视网膜中央动脉、静脉血流动力学研究

目的靡讨糖尿病视网膜病变(diabetic retinopathy,DR)的发生、发展与眼部血流动力学变化之间的关系。方法：应用彩色多普勒血流成像(color Doppler flow imaging,CDFI)技术检测28例正常人及72例Ⅱ型糖尿病患者视网膜中央动脉(central retinal artery,CRA)、中央静脉(central retinal vein，CRV)的血流速度和阻力指数。结果：糖尿病不伴DK者，CRA血流速度较对照组快(P<0.05)．随着视网膜病变程度的加重，CRA血流速度减慢，增殖型DR组CRA血流速度慢于对照组，不伴DR组及单纯型DR组(P均<0. 05)；糖尿病患者CRV血流速度较对照组快(P<0.001)，且搏动明显.结论：CRA、CRV的血流动力学变化与DR的发生、发展有密切关系。（中华眼底病杂志，1997，13：210-212）

THE CLINICAL STUDY OF RETINAL HEMODYNAMICS IN PATIENTS WITH DIABETIC RETINOPATHY

PURPOSE:To investigate the relationship between the development of the diabetic retinopathy(DR)and the changes of ocular hemodynamics. METHODS:The hemodynamic parameters (Vmax,Vmin,RI)of central relinal artery(CRA )and central retinal vein(CRV)were measured both in the diabetes mellitus(DM) group(72 cases)and the control group(28 cases)with color Doppler flow imaging(Acuson-128XP/10). RESULT:The hemodynamic changes in CRA and CRV in the different stages of DR had their own characteristicS. The blood flow in CRA of the DM patients without DR was higher than that of the control (P<0.05). With tile deterioration of the retinopathy the blood flow in CRA decreased. The velocity of the
blood flow in CRA of the proliferative DR group was less than that in the control ,DM without DR patients and background DR patients(P<0.05). The velocity of the flow in CRV of the DM patients was higher than that of control (P<0.001 )and exhibited its remarkable pulsative pattern. CONCLUSIONS:The changes of the hemodynamics in CRA.CRV was associated
with the development of the diabetic retinopathy. （Chin J Ocul Fundus Dis,1997,13: 210-212 ）