2 - Limit unnecessary screen time
Are there things you do on the screen that you could do in other ways? Instead of taking notes on a laptop, go old school and use a pen and paper instead. Do you need to look at the screen on every Zoom call, or would just listening in suffice? And if you use your laptop, tablet or phone to watch Netflix, swap for the TV instead. A larger screen further away is better for your eyes than a small one close up.