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I have purchased 19" Dell Square Monitor (E1690S) with 1280x1024 resolution, so that I can easily look at the Source Code at a glance in Visual Studio and read other things well.

But, I am wondering, that looking at a bigger screen will put more light on the eyes than the smaller screen and put more strain.

Is it correct that a 19" Screen will put more strain on eyes rather than the 15" Laptop Screen in following cases:

  1. Text size is equal on both.
  2. Text size is larger on 19" and smaller on 15"

Please suggest?

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closed as not constructive by terdon, Keltari, Xavierjazz, BBlake, bwDraco Mar 21 '13 at 17:41

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.If this question can be reworded to fit the rules in the help center, please edit the question.

More light does not mean more strain. If that was the case then you could never go outside.
(Compare sunlight intensity with the monitors. You will find that it is a lot more intense).

That means your premise is false.

As to strain due to other concerns: That depends on a lot of things, most of which are not mentioned in your post. Some examples (but no all of them) are:

  • Quality of both screens (You mentioned which large screen but not which laptop screen, so there is nothing to compare the larger screen with).
  • Distance to the screens (to far an the 19" will be a lot easier to read. Too close and you end up turning your head a lot. Distance to the screen(s) was not mentioned.
  • Height of the screens. (top of your eyes should be near the top of the screen.)
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