Shift to panoramic vision every 25/55 minutes.

If you work in front of a screen, take a micro break regularly. Move your focused vision away from the display for a minute or two. Widen your vision and try to see something towards the horizon, if possible. If not, try to see something 6 meters (or more) away from you. Try to do this ideally every 25 minutes, otherwise every 55 minutes. 

WHY IT HELPS:
Taking a short break from focusing your vision reduces eye strain. This allows the muscles in your eyes to relax, reducing the risk of eye fatigue or discomfort. It can also help prevent mental fatigue and maintain your focus, which can be particularly beneficial in high-concentration tasks.