[Certain aspects of the etiology of normal-pressure glaucoma].

Two groups of clinical-and-pathogenetic patients were defined through examining the hydrodynamics and hemodynamics of the eye in 67 patients (110 eyes) with normal pressure glaucoma (NPG); the below examinations methods were made use of: three-hour and one-day tonometry, tonography, determination of tolerance of the intraocular pressure (IOP), ultrasonic Doppler-graphy of the ocular artery and fluorescent angiography of the optic nerve. Tolerance of the original IOP, which was close to the age norm according to tonography readings, a reduced linear blood circulation, somewhat higher parameters of the peripheral resistance registered in the ocular artery (OA) and in the central retinal artery--(CRA)--(p < 0.05) and absolute defects of blood filling of the vascular system of the optic nerve disk (OND) were found to be typical of the group with a resistant and relatively low pressure (< or = 20 mm Hg), which was indicative of the predominant role of vascular disorders in the discussed patients.

[Triplex scanning of orbital vessels in patients with normal pressure glaucoma].

Bloodflow in the orbital artery and central retinal artery was studied by triplex scanning in 35 patients with normal pressure glaucoma, and 14 subjects without signs of glaucoma. Significant differences in the studied parameters were detected in the patients in comparison with the controls: decreased linear bloodflow velocity in the orbital (p < 0.01) and central retinal arteries (p < 0.

[Status of the cardiovascular system in patients with normal pressure glaucoma].

Twenty patients with normal pressure glaucoma (NPD) were examined. Concomitant cardiovascular diseases were diagnosed in 19 (95%) of them. Echocardioscopy with color mapping showed various diseases with left-ventricular dysfunction in 8 examinees.