大仙在這裏用單眼和雙眼的例子

估計更多是說明雙眼的 field of view (或者是 vision span) 和單眼是不同的。

 

就是說你閉上一隻眼，你能看到的 “寬幅” 畫麵就減少了。

 

以下來自維基百科

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.

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• 謝謝古狗兄. 我知道這個區別 -曉豔- ♀ (103 bytes) () 03/05/2012 postreply 11:48:08