How do i prevent my eyesight from going bad when using the computer?

Shift and move: First of all, the cumulative number of hours is probably the biggest risk for eye strain. The issue of eyesight is complicated and research is not clear on 'damage' from computer use compared to eye fatigue, strain, etc. By 'shift and move', i mean to look away from the screen, ideally toward the distance repeatedly throughout the days, take breaks, walk around. Reduced glare shields may.