Elements of Balint's
gaze apraxia: inability to move the eyes voluntarily to points in the visual field.
- spontaneous, reflexive movements spared
optic ataxia (disorder of reaching): impairment in visually guided movements of the limbs.
- some improvement with eyes closed.
spatial disorientation: inability to appreciate the "spatial properties" of objects.
- distance and size estimates impaired.
- impaired whole body movement in space.
simultanagnosia: the inability to see more than one object at a time.