Im not sure whether this is the right site to post this on, but here goes :
We are often told to relax our eyes when using computer/tv screens for extended periods of time. I often find that I forget to do this. In view of this, I was thinking if it would be possible to periodically display something on the screen to encourage the eye to focus at infinity.
I assume that the eyes are focused on the plane of the monitor screen during normal operation. However, would it be possible to blur the view on the screen in just the right way so as it would precisely simulate light that would come from an much larger (imaginary) screen placed further away. Is this possible?
My hunch is that this isn't possible, but I cant really articulate why. However, I am also thinking of the case of those 'magic eye' images, that encourage you to defocus the eye to a focal length different from the plane of the picture.
P.S. Im interested in the optical physics here not the technical engineering, hence the post here...