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Abstract #15419 Published in IGR 1-3
Color Doppler ultrasonography of short para-optic ciliary arteries in vascular glaucoma
Bresson-Dumont H; De Bray JM; Béchetoille AJournal Français d'Ophtalmologie 1999; 22: 743-748
PURPOSE: To study color Doppler imaging in orbital vessels, especially para-optic short ciliary arteries, in patients with vascular glaucoma. PATIENTS AND METHODS: Twenty vascular normal or moderate elevated pressure glaucoma patients (six with bilateral glaucoma, nine with unilateral glaucoma, and five 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. RESULTS: 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 was statistically significant increased in all glaucomatous patients of the study compared with normal subjects. DISCUSSION AND CONCLUSION: Comparison of Pourcelot index and ratios between parameters makes color Doppler imaging more reliable, especially when analyzing 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.LA: French
Dr. H. Bresson-Dumont, Service d'Ophtalmologie, CHU Angers, Angers; France
Classification:
6.11 Bloodflow measurements (Part of: 6 Clinical examination methods)
