Most of the research I've read around this subject seems to indicate that the important thing is getting actual sunlight exposure for eye health. It is not entirely clear if this is related to the broad spectrum nature of the light, the intensity of the light, or other confounding factors.

You seem to be claiming that light which comes from screens is inherently bad for your vision, which is a very different thing, and which I have not seen credibly evidenced before.

So yes, you might want to do a little more reading about "basic things", or consider sharing the things you're reading with the rest of us.

Your eyes are always receiving light, that's how they work. It's not at all obvious to me why an LCD backlight would be different from sunlight or an incandescent light or any other light source.