It is very important to have a screen with a high resolution because it will be easy to view on a small screen. The best resolutions for the eyes are 1920x1080 or better.  A 1920 x 1080 resolution means that there are 2,048 horizontal pixels and 1,080 vertical pixels. This allows you to see plenty of detail. This is why it is helpful to have less Eye Soreness in 1920x1080.