大仙在这里用单眼和双眼的例子

估计更多是说明双眼的 field of view (或者是 vision span) 和单眼是不同的。

 

就是说你闭上一只眼，你能看到的 “宽幅” 画面就减少了。

 

以下来自维基百科

For example, humans have a maximum horizontal field of view of approximately 200 degrees with two eyes, approximately 120 degrees of which makes up the binocular field of view (seen by both eyes) flanked by two uniocular fields (seen by only one eye) of approximately 40 degrees.

所有跟帖： 

• 谢谢古狗兄. 我知道这个区别 -晓艳- ♀ (103 bytes) () 03/05/2012 postreply 11:48:08