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Unilateral electronegative ERG in a presumed central retinal artery occlusion

Authors Lima, Cella W, Brue' C, Tsang S

Published 17 November 2010 Volume 2010:4 Pages 1311—1314


Review by Single-blind

Peer reviewer comments 2

Luiz H Lima1, Wener Cella2,4, Claudia Brue5, Stephen H Tsang2.3
1Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil; 2Department of Ophthalmology, 3Bernard and Shirlee Brown Glaucoma Laboratory, Edward S Harkness Eye Institute and Departments of Opthamology, Pathology and Cell Biology, Columbia University, New York, NY, USA; 4Department of Ophthalmology, University of Brasilia, Brasilia, Brazil; 5Department of Opthamology, University Politecnica delle Marche, Ancona, Italy

Abstract: A unilateral electronegative electroretinogram (ERG) was seen in a 94-year-old man with presumed central retinal artery occlusion. Goldmann perimetry revealed central scotoma in the right eye and no abnormalities in the left eye. Full-field ERG in the right eye described a reduction of the b-wave with a relative preservation of the a-wave which is characteristic of electronegative ERG. Hence, our case illustrates that ERG testing is essential for the work-up of individuals with suspected retinal vascular disorders.

Keywords: central retinal artery occlusion, electronegative ERG, inner retina, spectral domain optical coherence tomography

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