DEVELOPMENT OF VISUAL FUNCTION IN HEMIHYDRANENCEPHALY

This study reports on the findings of longitudinal follow-up of visual function in a 12-year-old girl affected by congenital right hemihydra nencephaly. This extremely rare unilateral brain malformation allowed the authors to gather new information on neuronal plasticity and funct ional compensations of the visual system across a period of 10 years. An extension of the preserved right visual hemifields above the middle line and strategical eye or head positions developed to increase visu al functions are discussed. In addition, ophthalmological and orthopti cal findings, as well as the development of monocular grating and line ar acuity, are described.