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Emma C. Massicotte, MD; Linda Semela, MD; Thomas R. Hedges III, MD

Arch Ophthalmol. 2005;123:364-367.

Objective  To evaluate the use of multifocal visual evoked potentials in the diagnosis of nonorganic visual field loss.

Methods  Five patients with unexplained visual field loss underwent full neuro-ophthalmic examination, Humphrey visual field testing, and multifocal visual evoked potential testing using the Accumap objective perimeter (ObjectiVision Pty Ltd, Sydney, Australia).

Results  In all 5 cases, the results of the ophthalmic examination did not correlate with the degree of visual field loss seen on Humphrey visual field testing. Multifocal visual evoked potentials testing showed essentially normal tracings.

Conclusions  Multifocal visual evoked potentials may be useful in cases of difficult to prove functional visual field loss or in cases in which objective documentation of normal function is needed.

Author Affiliations: Tufts University, New England Eye Center, Tufts–New England Medical Center, Boston, Mass.