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Simultaneous recording of pattern electroretinogram and visual evoked responses in neuro-ophthalmologic disorders

Department of Neurology, University of Wisconsin, Madison; Middleton Memorial Veterans Hospital, Madison; and Loyola University of Chicago, Maywood, IL.

Simultaneous pattern electroretinograms (P-ERG) and pattern visual evoked potentials (P-VEP) to transient and steady-state checkerboard pattern reversal were recorded in 52 normal volunteers. Twenty-seven patients were also studied. Three patterns of abnormalities emerged. Pattern 1 with prolonged P-ERG, prolonged P-VEP, and normal retino-cortical time (RCT) was found exclusively in early maculopathies. Pattern 2 with normal P-ERG, prolonged P-VEP, and prolonged RCT was found in optic nerve lesions without optic atrophy, probably indicating the presence of a demyelinating lesion of the optic nerve. Pattern 3, with very small or absent P-ERG and P-VEP, was observed in both maculopathies and optic atrophies.

Address correspondence and reprint requests to Dr. Celesia, Department of Neurology, Loyola University, 2160 South First Avenue, Maywood, Illinois 60153.

Supported by a grant from the Veteran's Administration.

Accepted for publication September 5, 1984.

This article has been cited by other articles:

				G. G. Celesia, D. Kaufman, and S. B. Cone Simultaneous Recording of Pattern Electroretinography and Visual Evoked Potentials in Multiple Sclerosis: A Method to Separate Demyelination From Axonal Damage to the Optic Nerve Arch Neurol, December 1, 1986; 43(12): 1247 - 1252. [Abstract] [PDF]