Functional monocular temporal hemianopsia.

Four patients, two men 25 and 43 years old and two women 20 and 40 years old, had complete monocular temporal hemianopsias, suggesting that it may be a more common functional deficit than has been recognized. The initial symptoms were visual loss and headache, and eye pain also occurred. Correct diagnosis is possible if the absence of a relative afferent pupillary defect and the persistence of a hemianopsia on binocular testing are demonstrated.