20-20-20 Eye Rest & Sit-Break Reminder
A timer that reminds you every 20 minutes (adjustable 10/20/30) to look 6 metres away for 20 seconds, plus an optional hourly sit-break reminder — with a gentle page banner and optional beep. The 20-20-20 rule reduces digital eye strain.
For self-care reference only. This reminder tool does not replace an eye exam; if you have persistent eye discomfort or vision changes, see an eye-care professional.
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What is it
Looking at screens makes us blink less and keep near-focus for hours. The 20-20-20 rule — every 20 minutes, focus on something 6 metres away for 20 seconds — relaxes focusing muscles; an hourly stand-up break helps counter prolonged sitting.
Notes & fun facts
Knowledge workers who set a gentle 20-minute reminder report far less dry and tired eyes by evening — the hardest part is remembering to rest, which is exactly what this timer does for you.
Origin & history
As computer and screen work spread, eye-care professionals came to recognize that prolonged near work reduces blinking and keeps the focusing muscles tense, causing eye strain and dryness. On this basis, ophthalmology widely recommends scheduled breaks — the well-known "20-20-20" rule: every 20 minutes, look at an object about 6 metres away for 20 seconds to relax the focusing muscle. This tool reminds you to do exactly that, for everyday eye-care reference only.
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