Multifocal examination techniques in malingering: case report of a patient with monocular vertical hemianopia

Interpretation of visual field defects respecting the vertical meridian and not related to distinct chiasmal or postchiasmal lesions

“…Thus the use of multifocal electrophysiological techniques may be useful in the diagnosis of some diseases such as acute zonal occult outer retinopathy or functional deficits. 14 In the present study, all patients were evaluated retrospectively from a large database and only five cases meeting criteria were eventually selected for a more detailed analysis, although a case report or a small case series has been previously reported. We had created the following checklist for a differential diagnosis used to assess patients with visual field defects respecting the vertical meridian that could not be attributed to distinct chiasmal or postchiasmal lesions: Neurologists and neuro-ophthalmologists should consider the differential diagnosis mentioned above in patients with visual field defects respecting the vertical meridian if MRI is negative for distinct lesions in the optic chiasm or the postchiasmal visual pathway.…”