Premyopia means a child is not yet short-sighted, but their prescription, age and other findings suggest an increased likelihood of developing myopia. It is an opportunity to assess risk, build protective habits and plan follow-up before distance vision becomes blurred. It does not mean myopia is inevitable. 1
At Vision Camberwell, we assess your child’s prescription, eye health and, where appropriate, eye length to help you understand the next step. You do not need to wait until your child struggles to see the classroom board to ask about their risk.
Contents
What does premyopia mean?
The prescription is only part of the picture
The International Myopia Institute’s definition includes a spherical-equivalent prescription greater than −0.50 dioptres and up to +0.75 dioptres, together with age and other measurable risk factors that justify considering preventive action. Spherical equivalent is a summary of the prescription, including astigmatism. A number within that range is not, by itself, a complete risk assessment. 1
Why age matters
Many younger children naturally have some long-sightedness. The term “hyperopic reserve” describes the amount of this long-sightedness available before the prescription shifts towards myopia as the eye develops. A younger child generally needs more reserve than an older child to be considered at lower risk. 2
For example, the same mildly long-sighted result in a five-year-old and an eleven-year-old does not carry the same meaning. We interpret the measurement alongside age and previous results. Population differences also matter, but ethnicity alone should not be used to diagnose premyopia or assign a universal cut-off. 2
Which children may be at higher risk?
Family history and daily routines
Having one or two short-sighted parents increases a child’s risk, but family history does not determine their future. Both inherited factors and environment contribute. Less time outdoors and intensive near work are relevant parts of the history. Myopia is not simply a consequence of parents allowing screens, and children without myopic parents can still develop it. 3
What measurements can tell us
A prescription moving towards myopia, or eye growth that warrants closer review, may prompt more frequent monitoring. Cycloplegic refraction, which uses drops to relax focusing, is particularly useful when assessing a child’s true prescription. Axial length measures the eye from front to back and adds context; it does not replace refraction or establish future myopia from a single reading. 2
What families can do now
Make outdoor daylight part of the day
Aim for around two hours outdoors during daylight each day where practical. Time can be accumulated through walking to school, outdoor breaks, play and family activities. The evidence for outdoor time is strongest for reducing or delaying myopia onset; it should not be presented as a guaranteed way to stop established myopia progressing. 3
School-based randomised trials have shown that adding outdoor time can reduce new cases of myopia. That supports making it a regular habit, rather than assuming an occasional long outing will have the same effect. It does not tell us exactly how much protection an individual child will receive. 4
Use shade and appropriate sun protection. Outdoor time does not require direct sun exposure, and children should never look at the sun.
Make close work more comfortable
Encourage regular breaks from prolonged reading, homework and screens, with a comfortable working distance and good lighting. These are sensible habits, but no particular break rule has been proved to prevent myopia by itself. Books and other close tasks also count as near work; simply swapping a tablet for a book does not remove that demand. 3
A practical routine might include outdoor play before homework, a break between tasks and placing a screen where your child does not need to lean very close. The goal is a sustainable balance, not removing reading or blaming schoolwork.
Do not rely on habits alone when risk is high
Outdoor time remains worthwhile, but a child with a prescription already close to myopia may need closer follow-up. Prevention research is evolving, and risk reduction cannot promise that myopia will never develop. 2
What happens at a premyopia assessment?
Understanding your child’s history
We ask about family myopia, previous prescriptions, school or screening results, outdoor time and near-work routines. Tell us about squinting, moving closer to the board or television, headaches or other concerns, even if you are unsure whether they relate to vision.
Checking vision, prescription and eye health
The assessment looks beyond a distance eye-chart result. We examine your child’s eyes and measure their prescription, using cycloplegic drops when indicated. We will explain the purpose of the drops and any temporary effects before proceeding.
Establishing an eye-growth baseline
Where appropriate, we measure axial length to monitor eye growth, normally every six months, with the timing adjusted to your child’s age, risk factors and assessment findings. We compare each measurement with previous results. Some eye growth is normal in childhood. We interpret change alongside age, refraction and the wider assessment, rather than treating every increase as disease or applying one universal target.
Agreeing on the next review
You should leave knowing what the findings mean, which habits to prioritise and when to return. The interval is individual. We recommend a review interval based on your child’s age, risk factors and assessment findings. Our axial length monitoring page explains the measurements in more detail.
Are treatments ever considered before myopia starts?
For some higher-risk children, preventive treatment may be worth discussing. The decision weighs the child’s risk against treatment burden, adverse effects, cost and uncertainty about long-term benefit. A treatment proven to slow established myopia is not automatically proven to prevent its onset. 2
In the LAMP2 trial, nightly 0.05% atropine reduced the proportion of children aged 4–9 in Hong Kong who developed myopia over two years compared with placebo. This does not establish permanent prevention or mean that every child at risk needs atropine. Treatment decisions require an individual assessment. 5
This is evidence for an individual clinical discussion, not a recommendation that every child with premyopia needs drops. Medicines, optical designs and light-based approaches each require their own assessment of evidence and suitability. We will explain the options relevant to your child rather than apply a standard treatment package to everyone.
If your child becomes short-sighted
Developing myopia despite good habits does not mean you or your child failed. It means the management plan needs to change. We will discuss correction for clear vision and suitable options to slow progression, while continuing outdoor habits and monitoring. Our parent’s guide to childhood myopia explains the next stage.
Before your appointment
Bring any previous prescriptions, school-screening results, glasses and reports. Tell us whether either parent is short-sighted and roughly when their myopia began. An outline of a usual school day and weekend helps us discuss practical changes; you do not need a detailed diary.
Let our team know your child’s age and that you are booking to assess myopia risk. Ask whether drops are likely to be used and whether you need to allow extra time.
Questions parents often ask
My child sees clearly. Why assess their risk?
Clear distance vision does not rule out a prescription moving towards myopia. Risk assessment considers more than whether a child can read the chart today. 1
Does premyopia mean my child will definitely need glasses?
No. It identifies increased risk, not certainty. A child may also need glasses for another reason, so any prescription recommendation depends on the complete assessment.
Is zero prescription always a good result?
Not necessarily. A result close to zero can mean less long-sighted reserve than expected in a young child. Age and prior measurements help determine whether it needs closer attention. 2
Can outdoor time guarantee prevention?
No. It is a useful protective habit supported by research, but individual outcomes vary. Keep the recommended reviews even when your child spends plenty of time outdoors. 4
Will reducing screen time be enough?
Not by itself. Consider overall near work, outdoor time and the child’s measured risk. Screen limits should not substitute for an assessment or be presented as a proven cure. 3
Should we start myopia-control glasses or contact lenses now?
Not automatically. The evidence and purpose of the specific design must fit a child who is not yet myopic. We will discuss whether monitoring, preventive intervention or correction for another visual need is appropriate.
Are eye-length measurements enough?
No. They complement the prescription, examination and history. One long eye or one change in eye length cannot, by itself, determine what treatment a child needs.
Do we need a GP referral?
No. You can contact us directly. A referral or previous report is helpful if another practitioner has already raised concerns.
Arrange a children’s eye test in Camberwell
Call (03) 9882 5666 to arrange an assessment and let our team know you are concerned about your child’s risk of becoming short-sighted. We will help you understand their current findings and put a practical follow-up plan in place.
Vision Camberwell Optometrists is at 784 Burke Road, Camberwell VIC 3124. We welcome families from Camberwell, Hawthorn, Balwyn, Kew, Canterbury and across Melbourne. Mandarin consultations are available with Jue Wang; mention your language preference when booking.
References
- Flitcroft DI, He M, Jonas JB, et al. IMI: Defining and Classifying Myopia, A Proposed Set of Standards for Clinical and Epidemiologic Studies. Investigative Ophthalmology & Visual Science. 2019;60(3):M20–M30.
- Tahhan N, Bullimore MA, He X, et al. IMI: 2025 Digest. Investigative Ophthalmology & Visual Science. 2025;66(12):27.
- Morgan IG, Wu PC, Ostrin LA, et al. IMI Risk Factors for Myopia. Investigative Ophthalmology & Visual Science. 2021;62(5):3.
- He M, Xiang F, Zeng Y, et al. Effect of Time Spent Outdoors at School on the Development of Myopia Among Children in China: A Randomized Clinical Trial. JAMA. 2015;314(11):1142–1148.
- Yam JC, Zhang XJ, Zhang Y, et al. Effect of Low-Concentration Atropine Eyedrops vs Placebo on Myopia Incidence in Children: The LAMP2 Randomized Clinical Trial. JAMA. 2023;329(6):472–481.
Reviewed by Dr Shonit Jagmohan, Optometrist. Last reviewed October 2026.
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T. (03) 9882 5666
E. vision@visioncamberwell.com.au
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784 Burke Rd, Camberwell
Victoria 3124, Australia
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T: (03) 9882 5666
Serving Camberwell and the Surrounding South Eastern Suburbs
An independent practice in Camberwell since 1951, we are experts in specialty contact lenses, including fittings after a corneal graft. We welcome patients from Hawthorn, Deepdene, Surrey Hills, Balwyn, Kew, Canterbury, Box Hill, Glen Iris, and across greater Melbourne.
