Ceccaldi M, Mestre D, Brouchon M, Balzamo M, Poncet M
Service de Neurologie et de Neuropsychologie, CHU Timone, Marseille.
Rev Neurol (Paris). 1992;148(5):343-9.
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.
一名37岁男性在大脑后动脉供血区域发生双侧中风后出现皮质盲。四年后，视野缺损测量（Goldmann视野计）显示双侧失明持续存在，黄斑视力保留2度，左下方象限在离中心凹10至30度偏心率之间存在中心凹周围保留。尽管有这种视觉障碍，该受试者仍能够进行视觉引导的运动。此外，他能有意识地感知视野盲区的视觉运动。CT和MRI显示病变累及大部分纹状皮质。位于枕叶内顶叶区域的视觉皮质相对未受影响。本文讨论了该结构对纹状体外运动视觉的作用。
