When meditating with eyes closed there seems to be 2 ways I can do this.
 What I call hazy eyes
When the eyes tend to go 'soft' and roll back slightly into the head, almost like wehn you are asleep.
 What I call busy eyes
When you are basically staring at the inside of your eyelids, fully awake and on the breath.
There's no scrunching of the eyes in either mode, but the hazy eyes tends to make me drop off, whereas with the busy eyes, I tend to stay alert more.
Also, and not wanting to start another thread...
Lately I've been dropping off, or almost. Not quite asleep in my meditation position (seated on the floor), but almost. I know when it's happened because I have these dreams/visions. These dreams/visions don't seem like the real (dream) expereinces we get, they are more like the kind you get just
before you fall asleep, or just
before waking up.
Having said that (bear with me
), when I have the 'busy' eyes, when I'm not anywhere near dropping off, I can still get, what can best be described as 'visions'. I'm not claiming anything supernatural here, it's just that they are quite different to the dreams/visions I get when almost dropping off. Different because I'm aware, I'm awake, when I get these dream/visions. Which can be of anything. Some of these are crystal clear and full of detail. Like the ribs on the surface of a leaf or the pores on the back of a hand.