闭眼后所见与光

闭上眼睛之后，我们看到的到底是什么呢？ 如果人体也有光，眼睛又像是光的进出口，那么闭上眼睛之后，光去了哪里？ 眼前浮现的那些东西，又是从哪里来的？

What exactly do we see when we close our eyes? If the human body also has light, and the eyes act as the entry and exit points for that light, then where does the light go when we close our eyes? Where do the things that appear before us come from?