Thanks for your reply. I can understand that LCD screens can cause eyestrain and I agree with your comments. I was just lucky that I spend a lot of time staring at Mac screens; both on computers, ipods, and borrowed iPads. I never experienced any eyestrain. I forgot about the constant eyestrain I experienced on the job staring at PC monitors and LCDs, and the cheap LCD I had a home attached to one of my Macs.
Also after reading some responses elsewhere on this forum, I now understand why text on e-readers seemed blurred to me. I was not aware how refresh actually worked. Now I do.
BTW, I did not mean it as a slight to use the phrase 'average joe'. Just to state that reading was my job. If you can call it reading when I had to learn to speed read, skip read, and selective read hundreds and hundreds of books a year.