Inclusion Criteria:  adults (<65) of either sex diagnosis of a stable homonymous hemianopia (>6 months) with absence of hemineglect lesion encompassing at least primary visual cortex but sparing parietal cortex normal auditory and cognitive function willingness to participate in the three month program ability to perform the visual discriminations in their intact field  Exclusion Criteria:  adults (>65) normal auditory and cognitive function unwilling to participate in the three month program inability to perform the visual discriminations in their intact field