Bryan Johnson· Author
The simplest defense against digital eye strain (DES) is the 20-20-20 rule: Every 20 min of near-work, look at something ≥ 20 ft away for ≥ 20 s.
Loading…
The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
The simplest defense against digital eye strain (DES) is the 20-20-20 rule: Every 20 min of near-work, look at something ≥ 20 ft away for ≥ 20 s.
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
For every 20 minutes you stare at a screen, for 20 seconds, stare at something 20 ft away.