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August 1968

A New Instrument to Measure Episcleral Venous PressureComparison of Normal Eyes and Eyes With Primary Open-Angle Glaucoma

Author Affiliations

Bethesda, Md
From the Ophthalmology Branch, National Institute of Neurological Diseases and Blindness, National Institutes of Health, Public Health Service, US Dept of Health, Education, and Welfare, Bethesda, Md.

Arch Ophthalmol. 1968;80(2):209-213. doi:10.1001/archopht.1968.00980050211011

A new instrument to measure episcleral venous pressure was described. The episcleral venous pressure of human eyes was measured by determining the pressure necessary to arrest blood flow with a modified force-displacement transducer. The mean episcleral venous pressure of 39 normal eyes was 9.0 ±1.4 mm Hg (standard deviation) and of 27 eyes with primary open-angle glaucoma was 8.6 ± 1.4 mm Hg. There was no significant difference between these values. The results were compared to those in the literature.