Science
What the research actually says
Two pages, written the way we wish health content always was: every claim tied to a named study you can open, uncertainty stated out loud, and no number invented to make a headline rounder.
The myopia epidemic
Half the world nearsighted by 2050. What the prevalence data shows, what screens can and can't be blamed for, and why childhood is the window that matters.
Read the evidence →The two-hour outdoor rule
The one intervention with randomized-trial support — how strong the evidence is, the leading explanation, and how families make the hours real.
See how it works →Outdoor light levels
The lux reference table: moonlight to midday sun, the ≥1,000-lux threshold from school trials, and why a brighter lamp doesn't count.
See the numbers →We are not clinicians and this is not medical advice — it's a carefully cited map of the literature. Worried about your child's eyes? An optometrist visit beats any webpage. Full disclaimer.