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The axial length cheat sheet.
One page, free, straight to your inbox — the numbers every parent should have on the fridge before the next eye exam.
What's on the page
Reference values by age
What axial length is typical at ages 4–15 — and when "normal for age" stops being reassuring.
The two warning values
The growth-rate line that separates "keep watching" from "act now" — and the 26mm line that changes the conversation entirely.
The three questions for your doctor
Exactly what to ask at the next visit so you leave with data, not vague reassurance.
The 30-20-10 rule card
The near-work habit from the book, printable — after every 30 minutes of near work, 6 meters away, for 10 minutes.
Get it free
One email with the cheat sheet, then occasional practical letters about children's myopia. No spam, unsubscribe anytime. See our privacy policy.
The next step after the numbers: your child's own curve.
The free tracker plots every measurement against age-matched percentiles — the same curves you see in our case files.