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为研究巩膜扣带术后后睫状动脉（ＰＣＡ）、视网膜中央动脉（ＣＲＡ）球后血流动力学的改变，不同术式对眼部血流动力学的影响及ＰＣＡ、ＣＲＡ球后血流动力学改变的相关因素分析，对５０例孔源性视网膜脱离患者术前、术后不同时期行彩色超声多普勒检测。结果：巩膜扣带术后ＰＣＡ、ＣＲＡ的收缩期最大血流速度（Ｖｍａｘ）、舒张期末最小血流速度（Ｖｍｉｎ）较对照组下降，而阻力指数（ＲＩ）较对照组增加，经配对ｔ检验有显著性差异（Ｐ值＜０．０５）。环扎＋外加压可明显影响ＰＣＡ、ＣＲＡ的血流量，而单纯外加压术则无明显影响。ＰＣＡ、ＣＲＡ的Ｖｍａｘ改变与环扎带缩短率呈负相关。认为巩膜环扎术可导致眼血流量下降。
To study the changes of hemodynamics after posterior ciliary artery (PCA) and central retinal artery (CRA) scleral buckling surgery, the influence of different surgical procedures on ocular hemodynamics and PCA, CRA ball blood flow Dynamic changes in the analysis of relevant factors, 50 cases of rhegmatogenous retinal detachment in patients with preoperative and postoperative different periods of color Doppler ultrasound. Results: After scleral buckling, the maximum systolic velocity (Vmax) and the minimum diastolic velocity (Vmin) of PCA and CRA decreased compared with the control group, while the resistance index (RI) increased compared with the control group. There was significant difference (P <0.05). Cerclage + external pressure can significantly affect the PCA, CRA blood flow, while the simple external pressure surgery had no significant effect. Vmax changes of PCA and CRA were negatively correlated with the cuff shortening rate. Scleral cerclage surgery that can lead to decreased ocular blood flow.