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Rev Neurol (Paris). 1992;148(5):343-9.

[Ambulatory autonomy and visual motion perception in a case of almost total cortical blindness].

[Article in French]

Author information

1
Service de Neurologie et de Neuropsychologie, CHU Timone, Marseille.

Abstract

A 37-year-old man experienced cortical blindness following a bilateral stroke in the territory of the posterior cerebral arteries. Four years later, the measurement of visual field defects (Goldmann perimeter) showed persistence of bilateral blindness with a 2-degree preservation of macular vision and a perifoveal sparing between 10 to 30 degrees of eccentricity in the left inferior quadrant. Despite this visual impairment, the subject was able to perform visually-guided locomotion. Moreover he consciously perceived visual motion in the blind parts of his visual field. CT and MRI showed a lesion involving most of the striated cortex. The visual cortex located in the internal occipito-parital regions was relatively spared. The contribution of this structure to extra-striated vision of motion is discussed.

PMID:
1448648
[Indexed for MEDLINE]

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