[A test of pressure tolerance of the optic nerve head in ocular hypertension].

VER was recorded in 7 patients with ocular hypertension while intraocular pressure was artificially elevated. Four of the patients manifested signs of vascular autoregulation, while in 3 no such signs were observed. This absence of autoregulation was also observed in primary open-angle glaucoma patients. On the basis of these first results it may be expected that the pressure compliance test will identify patients with ocular hypertension in whom damage to the optic disk is likely to occur at a later date.