[haertig]

Given a choice of eInk or LCD sitting right there in front of me, I will pick up the eInk device every time. Is that because LCD physical hurts my eyes? No. But there is something there that makes me choose eInk. I think it is the added stress and harshness I feel from LCD. It is subtle, and I can read from LCD for reasonable amounts of time if need be. I do not like the inherent reflective properties of LCD. Some LCD screens are certainly better than others, but none come even close to an eInk screen. I find that in some lighting situations that I have to reposition an LCD screen for best reading. I don't have to do that with eInk. So there could be an element of physical comfort in not having to hold the screen "just right" that makes eInk more appealing to me.

My best guess is that the stress and harshness of LCD is more tiring to my eyes over time, which is why I choose eInk. But I don't feel eye physical discomfort with either screen, if that's what you are getting at.