Abstract
This is the first report of oculomotor silent symptoms and unnoticed quadranopic field defects in mother and child, the latter with congenital spastic hemiparesis, homonymous hemianopia, and disturbed ocular motility, also due to a porencephalic type II cyst. Full neuro-ophthalmologi-cal examination with magnetic resonance imaging (MRI) of the brain in relatives of children with congenital spastic hemiparesis is required to detect porencephaly II carriers and the evaluation of the penetrance of a possibly porencephalic gene (familial porencephaly, MIM 17578 MacKusick, 1988).