Methods The blood flow of central retinal artery (CRA) and ophthalmic artery(OA) were measured by colour Doppler imaging(CDI) of both eyes before trabeculectomy and after surgery of primary open angle glaucoma(POAG).

• 方法 用彩色多普勒 (CDI)检测POAG小梁切除术前、后及非手术眼的视网膜中央动脉 (CRA)、眼动脉 (OA)的血流动力学改变情况。