Habit timer
20-20-20 Screen Break Timer
Screens do not damage eyes, but hours of near focus tire them: we blink less, the focusing muscle never relaxes, and by evening eyes feel dry and heavy. The 20-20-20 habit interrupts that cycle. Start the timer and let this page do the remembering.
Ready when you are
20:00minutes
Leave this tab open; the tab title counts down with you.
20
minutes of screen work
20
feet away (about 6 metres)
20
seconds of far focus
Sources
- Computers, digital devices and eye strain American Academy of Ophthalmology
- Look after your eyes NHS
Last reviewed: 2026-07-16