Hysterical hemianopia. The 'missing half' field defect
J. R. Keane
Hysterical hemianopias are uncommon and usually occur in association with
other lateralized complaints. The most frequent pattern consists of
decreased vision in one eye, an ipsilateral hemianopia on testing the
"affected" eye, full fields in the other eye, and a complete hemianopia
toward the affected side on testng with both eyes open. The incompatibility
of the monocular and binocular fields quickly demonstrates the functional
nature of this alleged visual loss.
