Color Doppler imaging in patients with asymmetric glaucoma and unilateral visual field loss

American Journal of Ophthalmology
M T NicolelaB E Walman

Abstract

To determine whether lower blood velocities and high resistive index in the retrobulbar arteries are primary or secondary to glaucomatous damage in patients with open-angle glaucoma. Color Doppler imaging was performed in 32 glaucomatous patients with unilateral visual field loss and in 31 control subjects. Peak systolic velocity and end diastolic velocity were measured, and resistive index was calculated in the central retinal artery and short posterior ciliary arteries. In patients with glaucoma, both the more affected and the contralateral eyes with normal visual fields had significantly lower peak systolic velocity and end diastolic velocity in their central retinal artery and short posterior ciliary arteries than did the control subjects of similar age (P < or = .03). The resistive index of the central retinal artery of both eyes of patients with glaucoma was also significantly higher than in the control subjects (P = .001). When considering the 16 patients who had the greatest visual field asymmetry, the more affected eyes had lower peak systolic velocity and end diastolic velocity in the central retinal artery than the contralateral eyes did (P = .02). Even eyes with normal visual fields in patients with asymmetric disea...Continue Reading

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