The vision is lost in halves that are contralateral to the posterior cerebral artery that is affected.

视野缺失会发生在受影响的大脑后动脉的对侧。

The posterior cerebral artery can also be compressed, which results in ischemic stroke of the occipital part of the brain, which is responsible for processing of visual information.

另外，大脑后动脉也会受到压迫，导致大脑枕部缺血性脑梗死；大脑枕部区域本来负责视觉信息的处理。

This is because the part of the occipital lobe in charge of the macula gets blood from both the posterior cerebral artery as well as the medial cerebral artery.

这是因为负责黄斑功能的枕叶部分同时由大脑后动脉和大脑中动脉供血。