当眼睛正视前方，注视一个目标不动，所看到的空间范围称视野，也就是说用眼睛的余光所看到的空间轮廓称视野。也叫周边视力。视野的大小对我们平常工作，生活极为密切。如视野缩小甚至成为小管状视野，那么我们走起路来就深一脚浅一脚，很不方便。无论看什么东西就好像从狭窄 When the eyes face the front, watching a goal does not move, the scope of the space you see is called the field of view, that is to say with the vision of the eyes to see the outline of the space called vision. Also called peripheral vision. The size of the field of vision of our daily work, life is extremely close. Such as narrowing the vision or even become a small tubular vision, then we walked to the depths of shallow, very inconvenient. No matter what it looks like from narrow