Computer eye strain: what causes it and how to prevent it
Digital eye strain shows up as dryness, blurry vision, headaches, and that heavy feeling behind the eyes after a long session. It's extremely common and extremely preventable.
Why screens tire your eyes
At the screen we blink less (around a third as often), the eye stays focused at the same close distance, and we often work in low light or with glare.
That combination dries the surface of the eye and keeps the focus muscle under constant tension. The result: tiredness, visual noise, and headaches.
Small habits that help
Follow the 20-20-20 rule: every 20 minutes, look 6 meters away for 20 seconds.
Blink on purpose a few times whenever you remember. Blinking spreads tears and resets the eye surface.
Keep the screen at arm's length and slightly below eye level. Match screen brightness to the room; too dim or too bright is worse than mid.
If you wear glasses, consider a pair tuned for the specific distance to the screen.
How Calmo helps
Calmo nudges you to look away at the right rhythm. The nudges are gentle: you can snooze them if you're mid-task.
If pain starts to show up, log it inside the app. Your pain log stays on your device and helps you spot the patterns that trigger it.