Experimental effect of intracranial hypertension upon intraocular pressure

Abstract

✓ Intracranial pressure was elevated acutely by inflation of an epidural balloon inside one side of the skull of monkeys. In most of the animals, intraocular pressure rose, beginning only after intracranial pressure had been elevated well above normal and continuing until the pressure in the expanding epidural balloon approached the level of the blood pressure. Thereafter intraocular pressure stabilized until it fell as vasomotor collapse ensued. The role of systemic arterial pressure elevations in the rising phase of intraocular pressure is thought to be less important than increases of ophthalmic venous pressure.