Pre-myopia: when a child is at risk but not short-sighted yet
Your child sees well, but someone has called her pre-myopic. It is a word for risk, not an illness. What it means, how the risk is judged, and what the evidence says about delaying short-sightedness before it starts.
- Pre-myopia is a research label for a child who is not short-sighted yet but is likely to become so, judged from age, eye measurement and other risk factors. It is not an illness.
- Earlier onset means more years of progression. In one Singapore study, each year earlier that myopia began raised the odds of high myopia by age 11.
- More time outdoors has good evidence for delaying onset. The effect is real but modest: after two years, 22.5% of children in outdoor groups had become myopic against 26.7% in comparison groups.
- Atropine drops delayed onset in one Hong Kong trial at 0.05% but not at 0.01%. The authors say the result needs replicating, so it is a conversation for an examination, not a home decision.
- Book an eye examination rather than relying on a chart screen. School vision screening in Malaysia happens in Year 1, Year 6 and Form 3.
"Pre-myopic" is a word more parents are hearing, from an optometrist, from a clinic, from a school-holiday advertisement. It sounds like a diagnosis, and it is not one. Your child can see well. The word describes a risk.
Below is what the label means, how risk is judged, and what the evidence says about delaying short-sightedness (myopia, rabun jauh) before it begins. Some of it is encouraging. Some of it is thinner than the advertising suggests, and the article says which is which.
What does "pre-myopic" actually mean?
It means a child who is not short-sighted yet, but whose eyes and background make it fairly likely. It is a research label, not an illness. The International Myopia Institute proposed it in 2019 so that prevention could be studied in a consistent way.
Their definition has a number in it. Short-sightedness begins at minus 0.50 dioptres (D) or worse. Pre-myopia is a measurement between about plus 0.75 D and minus 0.50 D, in a child whose age, starting measurement and other risk factors make future myopia likely enough to justify prevention. In plain words: not short-sighted yet, not far from it, and with enough going against her to make the risk worth taking seriously.
That last clause carries the meaning. Age and background are part of the definition, so two children with the same number can carry different risk. A label handed over with a number and nothing else tells you very little.
Will my child become short-sighted?
Nobody can promise either way. What we can do is judge how likely, and the honest tools are few: the child's age, the measurement, and the family background. Parental myopia cannot be changed, but the American Academy of Ophthalmology notes that it can help identify children who need closer monitoring. If you or your partner wear glasses for short sight, the same question comes up for your other children, and the answer is watching, not worrying.
Age matters most once short-sightedness starts. In a Singapore study that followed 928 children from age 7 to 9 up to age 11, each year earlier that myopia began was linked to higher odds of high myopia by age 11. Age of onset alone predicted it well, and adding parents' myopia and other factors barely improved the prediction.
That finding does not tell us to panic about a five-year-old. It tells us why the early years are where the effort goes: an earlier start means more years of progression. For the wider picture, see why short-sightedness is rising.
Can short-sightedness be delayed before it starts?
Time outdoors has good evidence behind it, and the effect is real but modest. A 2024 Cochrane review of five trials, with 10,733 children in total, found that school programmes to increase outdoor time may reduce the number of children who become myopic. After two years, 22.5% of children in the outdoor groups had become myopic, against 26.7% in the comparison groups, with moderate certainty.
The American Academy of Ophthalmology puts it another way: each additional hour a week outdoors was linked to a 2% lower chance of myopia developing. The same statement says near work, such as reading and screens, has produced inconsistent results, while the outdoor link is more firmly established.
Two limits are worth saying out loud. The trials were in primary school children, mostly in their first two school years, aged six to nine, so we know less about younger children. And a lower group average does not promise anything for one child. Free, good for a child anyway, worth doing. Not a guarantee. The evidence on outdoor time is laid out in its own article.
Do the myopia drops work before a child needs glasses?
One large trial says a stronger dose did, and the answer is not settled. The LAMP2 trial in Hong Kong gave 474 children aged 4 to 9, who were not yet myopic, either 0.05% atropine, 0.01% atropine or placebo drops every night for two years. Over the two years, 28.4% of the 0.05% group became myopic, and that was 24.6 percentage points lower than the placebo group. The 0.01% dose did not differ significantly from placebo.
The trial's own authors say more research is needed to replicate the finding, to learn whether it delays or prevents myopia, and to assess longer-term safety. Some of the authors also declared a patent application on the 0.05% dose. Light sensitivity was the most common side effect, reported in the second year by 12.9% of the 0.05% group and 12.2% of the placebo group.
What the evidence shows is limited. One trial is not yet enough to recommend drops for a child who is not short-sighted, and it does not show that they are pointless either. It is a conversation for an examination, with your child's own numbers. Most of the numbers behind drops come from children who were already short-sighted, and the atropine article walks through them.
Do screens and homework bring it on sooner?
The evidence is less firm than the worry. The American Academy of Ophthalmology statement describes studies of near work as inconsistent, while outdoor time is the link that holds up. That does not mean breaks are pointless. It means that taking screens away is not a proven way to prevent myopia, and that adding outdoor time is the better-supported step.
Habits that help eyes feel comfortable, such as breaks and a sensible distance, are still reasonable. The 20-20-20 rule is one that children can actually keep. Just do not expect it to change the odds of myopia by itself.
What can we do this school holiday?
Move the ordinary day outdoors, in the shade and in the cooler hours. The year-end break is a natural time for it, and the trials that showed a benefit were school programmes that added outdoor time to the ordinary school day. Walks, playgrounds, cycling and a picnic all count. Heat and haze can make outdoor time harder, so choose the morning or late afternoon and keep a hat and water in the bag.
Keep the goal small enough to last. A child who goes out most days is doing more for eye health than a family that plans one big outing and drops it by January. And skip the guilt. A child's risk of short-sightedness is not a parent's failure.
When should her eyes be checked, and how often?
Early, and by an eye examination rather than a chart alone. In the Klang Valley school study reported in The Star, myopia peaked at 44.7% at age nine, and the lead researcher advised that eye checks begin in preschool, or at least by age seven. School vision screening in Malaysia happens in Year 1, Year 6 and Form 3, which leaves long gaps between screens.
A child can also pass a chart screen and still be pre-myopic, because the chart asks whether she sees well today, not where her eyes are heading. If you have a concern, if a child sits close to the screen or squints at the board, or if you or your partner are short-sighted, book an examination rather than waiting for the next school year. How often to come back depends on her measurements and risk, so it is set at the examination rather than by a rule that fits nobody. For the routes in Malaysia, see children's eye checks in Malaysia.
- Your child squints at the board, or sits very close to the screen or television.
- Your child complains that far things look blurred, or rubs the eyes often after looking into the distance.
- You or your partner are short-sighted and your child has never had a full eye examination.
- Your child has headaches after reading or homework.
- A teacher, a school screening letter or an optometrist has raised a concern about your child's distance vision.
Common questions
The optometrist says my six-year-old is pre-myopic. Should I be worried?
What number counts as pre-myopia?
Can short-sightedness be prevented?
Do myopia drops work before a child needs glasses?
Do screens cause short-sightedness?
How much time outdoors does my child need?
My child passed the school screening. Is that enough?
- Investigative Ophthalmology & Visual Science · IMI: Defining and Classifying Myopia (Flitcroft et al., 2019) · pubmed.ncbi.nlm.nih.gov
- JAMA · Effect of Low-Concentration Atropine Eyedrops vs Placebo on Myopia Incidence in Children: the LAMP2 randomized clinical trial (2023) · pubmed.ncbi.nlm.nih.gov
- Ophthalmic and Physiological Optics · Age of onset of myopia predicts risk of high myopia in later childhood in myopic Singapore children (Chua et al., 2016) · pubmed.ncbi.nlm.nih.gov
- Cochrane Database of Systematic Reviews · Interventions to increase time spent outdoors for preventing incidence and progression of myopia in children, 2024 (CD013549, PMC copy) · pmc.ncbi.nlm.nih.gov
- American Academy of Ophthalmology · Reducing the global burden of myopia by delaying its onset, clinical statement 2021 · www.aao.org
- The Star · Too many kids with eye problems (26 August 2025) · www.thestar.com.my