为探讨糖尿病视网膜病变(DR)与视网膜中央动脉(CRA)血流动力学之间的关系,采用彩色多普勒血流成象技术测定糖尿病组45例和对照组20例CRA血流动力学参数。结果显示:糖尿病伴DR者CRA血流速度慢于不伴DR者,更慢于对照组;血糖浓度与血流速度呈负相关,与搏动指数呈正相关。提示早期糖尿病患者CRA血流速度变慢,该指标有助于DR发生的预测和早期诊断。 To investigate the relationship between diabetic retinopathy (DR) and hemodynamics of central retinal artery (CRA), color Doppler flow imaging was used to measure the hemodynamic parameters of CRA in 45 patients with diabetes mellitus and 20 patients in control group . The results showed that the blood flow velocity of CRA in diabetic patients with DR was slower than those without DR, and the blood glucose was negatively correlated with blood flow velocity and positively correlated with pulsatility index. Prompted CRA blood flow velocity in early diabetic patients slows down, the index is helpful for the prediction and early diagnosis of DR.