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Originally Posted by Dopedangel
You might not feel the strain but opticians and doctors will tell you staring directly at a light source is not good for your eyes.
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And some parts of this thread have been about establishing what "eye strain" is, what "staring directly at a light source" means in the context of staring at an LCD (what "light sources" were used in any studies), and just which opticians and doctors say this (and what they base it on). This is not to say that such doesn't exist, but that sourcing this evidence has not always been forthcoming, and so, experiences of "strain" to the contrary, like something reinforced by repetition rather than evidence.
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I don't get why Ipad users feel like they have to defend their reading on Ipad.I didn't read the whole thread but the OP was talking about LCD based readers not muti purpose devices like the Ipad.
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The OP's original post asks the question, "Are you able to read a book up to 8 hours on lcd without problems?", and iPad users here, as a significant number of users of "LCD based readers" (multipurpose means that, as indicated, one of the purposes is as a "reader") are responding. Others are responding to statements that might apparently state that "LCDs cause eyestrain", and pointing out their contrary experience.
Ultimately, however, I think your premise that the OP was talking about single-purpose "LCD based readers" is incorrect. The OP appears to explicitly
include them via their statement regarding the release of the "last one from samsung today", which, I believe, refers to a "multi purpose device like the iPad". They also explicitly call them out with, "I don't know anybody personal who is able to read a book for example on an iPad". So, I am unsure as to why you would want to exclude iPads, or state that the OP wasn't talking about them. They would certainly seem to be very much a valid part of the discussion.
Cheers,
Marc