browse by worry
Screens & short-sightedness
Screen habits, rising myopia, and the outdoor-time evidence, without judgement.
Screens
Why does my child sit so close to the screen?
Usually harmless, occasionally a clue. How to tell which one you are seeing.
Screens
Why so many children are short-sighted now
More children need glasses than ever. What drives it, and the one habit with real evidence behind it.
Screens
The 20-20-20 rule: screen breaks that actually happen
Every 20 minutes, 20 feet, 20 seconds. What it can and cannot do, and how to make breaks happen.
Screens
Two hours outside: the cheapest myopia habit, sized honestly
The two-hour number is everywhere. Here is what the trials actually measured, sized honestly.
Screens
Do children need blue light glasses?
The coating has never been tested in a child. What the evidence shows, and what actually helps sore eyes.
Screens
Screen rules that survive grandma's house
Why the rule that works at home falls apart at grandma's, and how to write one that does not need an enforcer.
Screens
Slowing myopia down: drops, lenses and the honest numbers
Drops, defocus lenses and overnight lenses, with the trial numbers and the uncertainty left in.
the short version, every week
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Every article here starts life as a carousel: quick, illustrated, easy to send to a worried friend.
@drchanliyen