Digital eye strain prevention

The main problem when we use a laptop or phone is a long-term static focusing our eyes on the screen. We fix our gaze for a long time and at a close distance. This causes overstrain of certain eye muscles, that is, for a long time in the same position, the gaze is fixed at one point.
The eye muscles can rest either in certain dynamics when we walk, for example, and look around at different distances.
Either our eyes rest when we look at a distance of five meters or 16 feet, in this position no eye muscles are tense. Of course, if a person not squinting his eyes
That is, both the oblique and rectus muscles of the eyes are relaxed and the eyeball is almost perfectly round because if we look far it begins to change shape and become a little flat as the rectus muscles begin to work.