Why would it harm your eye's?
The only difference is that the tiny pixels are closer together so that you can't see the lines in-between the pixels.
HD TV's dont hurt your eye's just because they have more pixels and better resolution.
3D on the other hand depending on the method used can strain your eye's and give headaches if watched for an extended period of time, but I don't think that apple plans on doing any 3D stuff.
Hi there everyone!
I just wanted to let all you guys know that retina/high resolution displays that you generally have to keep close to your eyes (phones/tablets/monitors), WILL hurt your eyes and even possibly damage them. This occurs because of the "infinitely" high detail of the graphics, texts, etc., because the eye can actually see the very fine details (for example, if you zoom out in a browser and a text is 1 millimeter in height, you can actually still read that text). This is not usually a problem, because the eyes are meant to do this from time to time when we need them to analyze a small object, but with the new high resolution displays, this happens many many times during the use of such a display. The damage comes from the eye going from "general picture" mode to "fine details" mode and back, repeatedly, many times over. If the details would not be so good, and there was pixelation involved, the eye would not bother to decipher the fine details, (as it "knows" it would only find more pixels) so it wouldn't need to get into that "fine details" mode (i think there is also a little bit of user psychology involved in this somehow).
HD TVs dont have this effect, first off because Full HD doesn't come anywhere near retina DPI because of the large screen size, and also because the TV set stays far away from you, and the "fine details" mode of the eye only gets activated when inspecting something up close.
I do have an adjacent wild theory to this: perhaps the psychological impact of the transition from a low res display to a high res, retina display, makes it that users start looking at the pictures/texts in more detail, basically "because they can", and because it looks really pretty, something that was not possible to experience on their old devices, where they simply did not care and were able to just focus on the big picture. In this case, it may be that with time, people will simply adapt to the new displays, and such damage will not occur any more. But who knows, it remains to be seen. For the time being, if my second wild theory is incorrect then I expect a lot of class action lawsuits to happen in the next years, as devices should not, in any way harm their user, with normal use.
A temporary solution for this problem, only for people with MAC computers, is to lower your display resolution. For iPad/iPhone/iPod users, like myself, try not to do a lot of work on your devices, use your computer instead if you can.
Have a good one!