When I was young I noticed my father was using his computer. I told him "Dad, I want to prove -That I am not an ignoramous. What if you could use the eyesight technology we talked about to look away from something. You use your computer to work. You look to the left, or right, then to the other side. For a moment -You're not staring at your screen, so your eyes get better. Watching a film, or a music video -It may be ridiculous. But for long periods of work -This could save people's eyesight."
This is small, but it can be significant, for example if it's done once per hour.