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Query: UMLS:C0595921 (intraocular pressure)
 11,750 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The speed of the blood-flow and the indexes of pulsation in posterior ciliary arteries supplying the choroid and the anterior optic nerve segment were evaluated in 30 healthy persons (60 eyes) aged 20-60 years with intraocular pressure values of 15-20 mm Hg and in 60 persons with primary glaucoma (120 eyes) aged 22-76 years. The investigations were carried out by the method of Doppler focused pulsating ultrasonography, with an 8.0 MHz probe; the instrument used was the TC-2-64 produced by EME (Germany). It was established that the main speed of the blood-flow in the choroid vessels in healthy people is higher than in the arteries supplying the anterior segment of the optic nerve. These speeds are respectively: 15.13 +/- 4.3 cm/s and 12.03 +/- 3.0 cm/s. The difference is statistically significant. The index of pulsation in the posterior ciliary arteries of both vascular systems does not differ in a statistically significant way and amounts respectively: 0.68 +/- 0.13 and 0.71 +/- 0.11. In patients with glaucoma it comes much earlier to a decrease of the speed of the blood-flow and to an increase of the indexes of pulsation together with a raise of the IOP in the system of the choroidal posterior ciliary arteries than in the anterior segment of the visual system.
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PMID:[Comparative evaluation of blood flow velocity and pulsation curve in the posterior ciliary arteries supplying the choroid and the anterior part of the optic nerve]. 176 62

The perfusion of blood and pulsation curve in the posterior ciliary arteries in glaucomatous patients was evaluated before and after surgical and pharmacological treatment by Doppler's focused pulsating ultrasonographic method by means of a TC-2-64 apparatus with a probe of 8 MHz frequency. Twenty two patients were treated only conservatively, 27 by a surgical intervention. Before the installation of the treatment the intraocular pressure was higher than 35 mm Hg (averagely), the perfusion velocity was lowered and the indexes of pulsation elevated. After surgery the IOP was lowered--averagely beneath 15 mm Hg, the velocity of blood perfusion and pulsation indexes showed normal values in all the operated persons. After pharmacological treatment the IOP lowered but its mean value persisted in the 20-22 mm Hg range. Only in patients with early glaucomatous changes the blood perfusion remained normal with the intraocular pressure around 20 mm Hg. Instead in patients with advanced glaucomatous changes the velocity of the blood perfusion and the pulsation indexes showed pathological values with the IOP around 20 mm Hg.
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PMID:[Comparative evaluation of blood flow in posterior ciliary arteries in patients with glaucoma after surgical and pharmacological treatment]. 226 53

One hundred and ten examination were performed in 71 patients with primary glaucoma aged 21-81 years (217 eyes). The blood perfusion speed in the ophthalmic artery was measured in each patient by the ultrasonographic pulsating Doppler's method with a probe of a 2.0 MHz frequency by means of a TC-2-64 apparatus of EME production. The ophthalmic artery was examined by transorbital technique according to Spencer and Whisler on a 40-50 mm depth. The examined orbits were divided into 4 groups in dependence of the grade of the optic nerve atrophy. A lowering of over 50 per cent of the blood speed (below 10 cm/s) was found in 10.6 per cent of the eyes. Optic atrophy of the 3d and 4th grade was revealed in 70 p.c. of these eyes; the intraocular pressure remained in normal limits.
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PMID:[Evaluation of blood perfusion velocity in the ophthalmic artery of glaucoma patients]. 268 60