title: [Color Doppler ultrasonography of short para-optic ciliary arteries in vascular glaucoma].
abstract: OBJECTIVE
  To study color Doppler imaging in orbital vessels, especially para-optic short ciliary arteries, in patients with vascular glaucoma.
  
  
  METHODS
  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.
  
  
  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 were statistically significant increased in all glaucomatous patients of the study compared with normal subjects.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Service d'Ophtalmologie, CHU Angers.
authors.forename: H
authors.initials: H
authors.lastname: Bresson-Dumont
authors.forename: J M
authors.initials: JM
authors.lastname: de Bray
authors.forename: A
authors.initials: A
authors.lastname: Béchetoille
mesh_terms: D000368:Aged; D001783:Blood Flow Velocity; D001794:Blood Pressure; D017536:Carotid Artery, Common / Q000503:physiopathology; D019842:Ciliary Arteries / Q000000981:diagnostic imaging* / Q000503:physiopathology; D016001:Confidence Intervals; D003627:Data Interpretation, Statistical; D005260:Female; D005901:Glaucoma / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009880:Ophthalmic Artery / Q000503:physiopathology; D009900:Optic Nerve / Q000098:blood supply; D012307:Risk Factors; D018615:Ultrasonography, Doppler, Color; D014655:Vascular Resistance