Follow the 20-20-20 rule and optimize your screen habits

Combine regular focus breaks, optimized display settings, and conscious blinking to address the three main causes of digital eye strain.

Steps

1. Apply the 20-20-20 rule: Every 20 minutes, look at something at least 20 feet away for 20 seconds. This relaxes the ciliary muscles that control focus.
2. Match screen brightness: Adjust your display so it blends with the room's ambient light rather than glaring or appearing dim.
3. Increase text size and contrast: Scale up until you can read comfortably without leaning in.
4. Enable a blue-light filter: Use Night Shift (Mac/iOS), Night Light (Windows), or f.lux in the evening to reduce sleep-cycle disruption.
5. Blink deliberately: Screen use cuts blink rate roughly in half. If dryness persists, use preservative-free artificial tears.
6. Position your monitor: Place it about arm's length away with the top of the screen at or just below eye level.

Why It Works

Digital eye strain results from sustained near-focus, reduced blinking, and brightness mismatches. This routine breaks all three patterns with minimal disruption to your workflow.