In it, he identified the part of the brain responsible for seeing things at the center of your visual field, what's called foveal vision.

在这篇论文中，他确定了大脑中负责看到视野中心的部分，这就是所谓的中央凹视觉。

OK? That's why if you have loss of foveal vision and macular degeneration, it's really awful.

好吗？所以如果你失去了中央凹视力和黄斑变性，那真的很糟糕。