There should be no arguement over which screen type cause eye strain.
LCDs with backlight and frequent refresh rate causes eye strain. The major issue is the toll on eyes' ability to focus.
The older the reader is the worst their eye focus is. Therefore when read on TFT / LED LCDs, our eyes work harder to adjust.
THis was not a problem to young people, but for those first / 2nd generation IT people, it is highly apparent, I work at a IT place and the verdict was over whelming, the LED / TFT screens are bad for reading books! However it does gets better if the text was projected on a 52 inch TV runing 1366 X 768 and fonts set at type 20 or something!
The savior is E-ink screen, it does not strain our eyes.
So a 11 inch E-ink grayscale ereader with 1Ghz processor, powerful enough to process pdf with fast zoom and browse, weight under 200 gram is my dream ereader.
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