Indeed - "eyes open" in the figurative sense, with knowledge of good and evil.
I'd like to go over that a bit. We know from the Biblical account Adam and Eve were not created blind. (We agree there, I think.) Adam was told not to eat from the tree of knowledge of good and evil, if he did, he would die, in other words, have the death process working in him starting the very day if he ate from that tree. We know from the account they did not lay down and die that 24 hour day. But on the day they ate from the tree, the death penalty would be imposed. I usually take one point at a time. So let's move on a bit.
Genesis 2:9 - And God Jehovah caused to spring from the soil every tree inviting in looks and good for food, and the tree of life in the middle of the garden, and the tree of knowledge of good and bad. (The Bible in Living English)
Thus there were two trees spoken of distinctly in that sentence, distinguishing them from the rest of the trees in the garden. The tree of life and the tree of knowledge of good and bad. (or good and evil, depending on which translation is being used.)
I'll try to go into that more later.
Something to consider is that the serpent approached Eve, not Adam. But God told Adam, not Eve, the following in chapter 2 of Genesis: "Jehovah God also gave this command to the man: “From every tree of the garden you may eat to satisfaction.
17 But as for the tree of the knowledge of good and bad, you must not eat from it, for in the day you eat from it you will certainly die.” That was before Eve was created. Obviously Adam must have told Eve what God said about that.
(Later perhaps for more. Have a good night's sleep.)