Incongrous homonymous hemianopia
|The patient has a left incongrous homonymous
hemianopia (suggesting lesion in the right optic tract).
Optic tract lesion causes homonymous hemianopia which is incongrous (meaning that the shape of the defect is different in the two half fields). This can be established on confrontation if significant. If subtle it is best documented with formal field test.
In the examination, lesion associated with optic tract
is often associated with contralateral pyramidal signs (due to damage to
the cerebral peduncle) such as spasticity.