Eyelids and eyeballs do go together

I think I had my first eyelid-glued-to-eyeball event last night. At about 1:30am, I suddenly opened my eye (I think it was a reaction to a dream) and it hurt on the right side mildly. It wasn't super-painful, but it definitely hurt more than an average eye-opening. My vision is still good this morning though, so I don't think any damage was done.

This is a far cry though from some accounts I've read, where people literally can't open their eyes in the morning and its extraordinarily painful. I've had some experiences with that, but it was because my eyedrop-covered upper eyelashes were glued to the lower eyelashes.