Bresson-Dumont H, de Bray J M, Béchetoille A
Service d'Ophtalmologie, CHU Angers.
J Fr Ophtalmol. 1999 Aug-Sep;22(7):743-8.
To study color Doppler imaging in orbital vessels, especially para-optic short ciliary arteries, in patients with vascular glaucoma.
Twenty vascular normal or moderate elevated pressure glaucoma patients (6 with bilateral glaucoma, 9 with unilateral glaucoma et 5 with asymmetric glaucoma) underwent a color Doppler imaging (Accusson 128XP) in orbital arteries: common carotid, ophthalmic artery, central retinal artery, short para-optic ciliary arteries. Systolic and diastolic blood flow velocities were measured, and resistance index of Pourcelot and ratios between different parameters were calculated.
In patients with unilateral glaucoma, ratios of systolic velocities between para-optic ciliary artery and common carotid, and ratio of Pourcelot index between para-optic ciliary artery and ophthalmic artery were increased in glaucomatous eyes. And Pourcelot index were statistically significant increased in all glaucomatous patients of the study compared with normal subjects.
Comparison of Pourcelot index and ratios between parameters makes color Doppler imaging more reliable, especially when analyse short para-optic ciliary arteries, which vascularize optic nerve. In these arteries Pourcelot index was increased in vascular glaucoma patients. Vascular risk factor should be taken into consideration in this form of glaucoma.
研究彩色多普勒成像技术在血管性青光眼患者眼眶血管，尤其是视神经旁短睫状动脉中的应用。
20例血管正常或眼压中度升高的青光眼患者（6例双侧青光眼，9例单侧青光眼，5例不对称性青光眼）接受了眼眶动脉的彩色多普勒成像检查（使用Accusson 128XP）：颈总动脉、眼动脉、视网膜中央动脉、视神经旁短睫状动脉。测量收缩期和舒张期血流速度，并计算普尔塞洛特阻力指数及不同参数之间的比值。
在单侧青光眼患者中，青光眼患眼中视神经旁睫状动脉与颈总动脉的收缩期速度比值，以及视神经旁睫状动脉与眼动脉的普尔塞洛特指数比值升高。与正常受试者相比，该研究中所有青光眼患者的普尔塞洛特指数均有统计学意义的升高。
比较普尔塞洛特指数及参数之间的比值可使彩色多普勒成像更可靠，尤其是在分析为视神经供血的视神经旁短睫状动脉时。在这些动脉中，血管性青光眼患者的普尔塞洛特指数升高。对于这种类型的青光眼，应考虑血管危险因素。
