New book tracks one family’s nine-year myopia prevention experiment

Ronglin “Linco” Lin’s new book, No More Myopia Panic, turns a nine-year, measurement-first experiment with his two sons into a guide for preventing childhood myopia. The release lands as China’s high school myopia rate remains 80.5%, and the book’s evidence library and tracking tools are now available online.

Why it matters: - Childhood myopia is widespread in China, where 80.5% of high school students are myopic, according to the country’s National Health Commission. - The book argues that parents can slow or prevent vision loss by tracking eye growth before a child fails a vision screening. - The release adds a family-tested case study to a field usually driven by clinic data and post-diagnosis intervention.

What happened: - Ronglin “Linco” Lin released No More Myopia Panic this week. - The book documents a nine-year prevention experiment involving Lin’s two sons. - Lin’s older son entered tenth grade this September at a top-ranked high school in China with normal vision. - Lin’s younger son is a fifth-grader and remains myopia-free. - The book is available in paperback and ebook on Amazon at Amazon listing and through major ebook retailers via Draft2Digital. - Companion resources are available at the project website.

The details: - Lin’s older son started first grade in September 2017, and the family began prevention that same week. - In January 2019, the boy’s first axial-length measurements were 23.01 mm and 22.96 mm, with +1.25 diopters of farsighted reserve. - Nearly eight years and 21 axial-length check-ups later, his eyes had grown 0.62 mm, or about 0.08 mm a year. - The boy still holds +0.25D of reserve and has uncorrected vision better than 20/20. - The family’s toolkit included low-dose atropine in the early years, repeated low-level red-light therapy since 2020, outdoor time and nutrition. - Those methods are widely used in China but have not been approved or cleared by the U.S. FDA. - The book says it documents every choice and the safety monitoring protocol, including OCT follow-ups. - The book distills the approach into The 6S Method: light environment, red-light therapy, optical correction, near-to-far conversion, vision training, and nutrition and medical support. - The book centers on axial length as the key measurement to track before vision declines. - The book includes age-by-age growth tables and a “30-20-10 rule” for screen-time routines. - The book cites 98 peer-reviewed studies, republished openly with plain-language annotations and verified DOI links in an online evidence library at the evidence library. - The book notes that defocus spectacle lenses slowed myopia progression by 52% and eye growth by 62% over two years in a randomized controlled trial published in the British Journal of Ophthalmology. - Five-year follow-up data on next-generation defocus lenses, published in Eye and Vision in 2025, showed children ending with 1.75 diopters less myopia and 0.72 mm less eye growth than controls, plus a high-myopia rate of 9% versus 38%. - A healthy six-year-old’s eye grows about 0.17 mm per year, according to the book’s growth tables. - One schoolmate at the same school entered sixth grade in January 2023 already myopic at -0.50D/-0.75D, with axial lengths of 24.35 mm and 24.40 mm. - After following the same measurement-first routine, that student’s prescription returned to zero in seven months, and axial lengths shortened to 24.22 mm and 24.24 mm. - The student’s latest check-up in October 2026 showed 24.29 mm and 24.41 mm, still myopia-free in tenth grade. - The book says another child tracked in the project moved from -1.50D to 0.00D in nine months. - The project website says follow-up records are published openly. - Lin says the experiment will continue with the younger son, and each year’s data will be published.

Between the lines: - The book tries to shift myopia prevention from fear-driven reaction to routine measurement. - Lin frames the approach as a way to let families manage eye growth the same way they manage grades or other trackable outcomes. - The release arrives after the U.S. FDA authorized the first eyeglass lenses shown to slow myopia progression in children in September 2025. - The defocus technology behind those lenses was invented at Hong Kong Polytechnic University, highlighting Asia’s role in myopia-control research.

What’s next: - Linco plans to keep publishing the younger son’s annual data. - The project says additional family cases, evidence summaries and parent tools will remain available online. - The book positions axial-length monitoring and routine measurement as the core next step for parents who want to intervene early.

The bottom line: - No More Myopia Panic turns one family’s long experiment into a public playbook for early myopia prevention, with data, tools and studies designed to make the strategy repeatable.