ABSTRACT
Introduction ............................................................................................................ 154 Visual Field Loss .................................................................................................... 154
Neural Substrates of Visual Field Loss ......................................................... 156 Diagnosing Visual Field Loss ....................................................................... 156
Perimetry ........................................................................................... 157 Amsler Grid ...................................................................................... 159 Confrontation Field Testing .............................................................. 159
Intervention for Visual Field Loss ................................................................ 161 Central Vision Loss ........................................................................... 161 Loss of Vision in One Eye ................................................................ 161 Scattered Scotomas ........................................................................... 161 Concentric and Altitudinal Vision Loss ............................................ 162 Cortical Blindness ............................................................................. 162 Homonymous Defects....................................................................... 164
Visual-Spatial Neglect............................................................................................ 170 Characteristics of Visual-Spatial Neglect ..................................................... 170 Neural Substrates of Visual-Spatial Neglect ................................................. 171
Parietal Lobe ..................................................................................... 172 Temporal Lobe .................................................................................. 173 Frontal Lobe ...................................................................................... 174 Parietofrontal White Matter Tracts ................................................... 174 Subcortical ........................................................................................ 174 Dopaminergenic ................................................................................ 174
Differentiating Visual-Spatial Neglect from Homonymous Hemianopia ..... 175 Intervention for Visual-Spatial Neglect ........................................................ 180
Compensatory Interventions for Static Presentations ....................... 180 Rehabilitation Activities for Static Presentations ............................. 181 General Mobility and Orientation Strategies .................................... 181
Case Example ............................................................................................... 185 Summary ................................................................................................................ 186 References .............................................................................................................. 187
Homonymous hemianopia, which is the loss of half the visual fi eld on the same side in both eyes, is frequently found concurrently with visual-spatial neglect. Visual fi eld plots of hemianopia are physical representations of the neural insult; they respect the neural anatomy. By contrast visual-spatial neglect is a cognitive phenomenon that can vary subject to cueing and to the type of stimulus presentation. If there is a dense homonymous hemianopia without visual-spatial neglect, patients will usually understand that they have a visual fi eld loss for which they need to compensate. However, they are not necessarily effi cient at doing so.
