I can't see the eye!!!!!! I need to see the eye to get rid of it!
In this visual, the narrator is being helpful to the old man, but in his mind he is completely going crazy about how the old man's eye looks, he wants to get rid of the old man's eye even if it means killing the old man.
In this visual, the narrator is watching the old man sleep because he is trying to get rid of the old man's eye by murdering him but he couldn't murder the old man because he could not see the old man's eye. The narrator did this for seven days straight.
This visual shows the narrator killing the old man. The narrator killed the old man on the 8th night and he finally got the courage to kill the old man because when the narrator was trying to creep into the old man's room, the old man woke up from his sleep and the narrator seen the eye so he "got rid of the eye".