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Article
May 1980

Baring of the Circumlinear VesselAn Early Sign of Optic Nerve Damage

Author Affiliations

From the Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami (Fla) School of Medicine.

Arch Ophthalmol. 1980;98(5):865-869. doi:10.1001/archopht.1980.01020030859012
Abstract

• Baring of the circumlinear vessel is reported as an early sign of optic nerve damage. Evidence is presented to show that this finding is not present in the normal population and, unlike previously described signs of glaucomatous cupping, can be observed at a stage of glaucoma prior to the development of visual field loss. Analysis of a series of stereoscopic photographs from selected highrisk ocular hypertensive patients disclosed a 54% incidence of baring of the circumlinear vessel. Although initially thought to be pathognomonic for glaucomatous cupping, baring of the circumlinear vessel is seen rarely in acquired cupping from optic atrophy secondary to other causes.

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