I'm sorry, I didn't mean to open a can of worm and upset all those who believe that e-ink is better for their eyes! It's just that I am a scientist and normally search for evidence on pubmed rather than reporting what happened to me, to my mother or looking in a blog...
My fault, I misunderstood the question of the first post - I had thought he feared that e-ink might bothers his eyes and I pointed out that the only scientific study in biomedical journals I could find says e-ink is as safe as backlit for your eyes.
I own an e-ink reader myself. Not because I think that backlit devices give me red eyes (I stare most of the day to a computer and have no problems at all with it) but simply because I find it more similar to paper, that is it looks nicer.