Abstract

A semilogarithmic relationship has been established between changes in intraocular pressure and ocular vascular volume after acute common carotid occlusion. This relationship has been used to derive a series of equations that relate the ocular blood volume change after acute common carotid occlusion and the resultant pressure changes in the intraocular vascular compartment by a theoretical constant termed the coefficient of vascular rigidity and a variable, Pco, that reflects the pressure dynamics in the carotid system after acute carotid occlusion. A method for estimating Pco in patients using multiple weight carotid compression tonography is described. Pco was found to vary from normal values in patients with chronic cerebrovascular disease.

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