chatty and kate, I've heard my husband refer to the rise in blood sugar during the night. There's even a name for it. I'll ask him and let you know more.
Kate, Ross is an optometrist so I'll ask him about the eye thing too.
Because he's a Type I Diabetic, an eye doctor and has lots of patients with Diabetes, he's a wiz with some of this stuff.
I'll get back to you!