To be honest Neesy, you should technically only spend 40-45 minutes in front of a computer screen with Glasses because of the glare. It is a EU law, I don't know if you have one in Canada. Spending too much time in front of a screen(Computer/e-book) will eventually damage your eyes.You are so right about a physical book being better for your mind. Even the glare from an E-book affects you negatively. That is why for people who have trouble sleeping it is recommended not to use a computer, smartphone, tablet or even an E-Reader because of the light coming from the screen. A good old fashioned book is the way to go. I like to read a (real) book every night before bed as it actually helps me sleep better.
I read on the sofa, just can't read in bed. hmm.