Eye tests & check-ups

My child has never had an eye test. Do I need to sort this before school?

Nobody tells most parents that the school eye check happens at preschool too, but only reliably reaches every child from Year 1: the preschool contact only covers government and government-aided preschools. For a lazy eye, that gap can matter. Here is what to do before it closes.

by Dr Chan Li Yen · MBBS, MOphth (UM), Fellowship in Paediatric Ophthalmology & Strabismus

Practises at Hospital Kuala Lumpur 11 min read · 2,065 words

Key takeaways

Malaysia's school health team screens vision at four points, preschool, Year 1, Year 6 and Form 3, but the preschool check only reaches government and government-aided preschools. For many children, Year 1 is still the first formal eye check they get.
Amblyopia, a lazy eye, is best treated before a child is seven or eight, so a check before school matters more than it sounds like it should.
A lazy eye rarely hurts and is rarely noticed at home, which is exactly why it needs a proper check rather than waiting to be noticed.
The klinik kesihatan child health book already schedules an eye check at birth, one month, eighteen months and four years. A missed one is worth going back for.
Studies of Malaysian preschoolers keep finding vision problems, including amblyopia, that nobody had picked up before the child was tested.

Almost every week a parent tells me some version of this, usually a little sheepishly: he is six, starting Year 1 in a few months, and nobody has ever actually tested his eyes. Not once, not properly. They assumed someone would, at some point, and nobody did. I want to say clearly, before anything else: that is not something you did wrong. It is a gap in the system, not a gap in your care.

The reason it matters is timing, not blame. Some of the commonest problems in a young child's eyes are treated far better the earlier they are found, and the ordinary path most Malaysian children travel does not reliably find them until school has already started.

Does my child need an eye test before starting school?

Yes, if nobody has properly tested their vision yet. Amblyopia, what we call a lazy eye, is the leading cause of reduced vision in children, and it responds far better to treatment when caught young: eye doctors aim to treat it before a child is seven or eight, because results get harder to achieve after that. A three- to six-year-old who has never had a vision check is exactly the child that timeline is written for.

This is not about catching every child in an expensive private check-up. It is about making sure one proper look happens before the age where treatment starts losing its edge. If your child already sees an optometrist or has been through the 4-year klinik kesihatan eye check, you have likely covered this. If not, this is the gap to close.

Isn't this what the school health checks are for?

Partly, and it depends on the preschool. Malaysia's school health teams do run structured vision screening at four points, preschool, Year 1, Year 6 and Form 3, using a Snellen chart at six metres, with coverage above 98% at each stage. The catch is that the preschool check only reaches government and government-aided preschools registered with the Ministry of Education. A child in a private tadika, or a child not yet in any preschool, can miss that contact entirely and reach Year 1 having never been screened.

Malaysian researchers describe the same gap from the other side. Writing about the years before the coverage figures above improved, one study noted that the "nationwide eye screening program effectively covers only primary school children who are 7 years of age and above, but does not include children in the preschool age (6 years and below)." A later paper, reviewing the same landscape, still found "no national vision screening programme for preschool children in Malaysia," meaning no dedicated preschool programme separate from the government and government-aided school visits above, and the specialists doing that work are, by their own account, too few for the number of children who need seeing.

What happens if a lazy eye is missed until Year 1?

The treatment window narrows, and it gets harder work for the same result. Amblyopia develops because the brain, not just the eye, learns to favour clearer input from one side; the longer that pattern sits, the more stubborn it becomes to retrain. Glasses, patching or blurring drops in the stronger eye can still help an older child, even into the early teenage years, but the same treatment given at four does more, faster, with less of a fight.

What makes this particular condition dangerous is precisely that it is quiet. A child with a lazy eye is not usually in pain, is not obviously squinting, and often does not complain, because the weaker eye has simply never known anything sharper. Parents rarely spot it at home. That is the entire argument for a check that does not depend on the child telling you something is wrong, done before school starts rather than after.

A lazy eye does not hurt, so nobody complains. That is exactly why it needs a proper look.

How common is a missed vision problem in Malaysian preschoolers?

More common than most parents expect, based on the studies that have actually gone and looked. A survey of over a thousand kindergarten children in Segamat, Johor, run by Chew and colleagues, found visual impairment in 12.5% of the children examined, and amblyopia specifically in 7.53%, most of it never previously picked up. A separate study of preschoolers in Kuching found visual impairment in about 5% of children checked, refractive error being the commonest cause. A third, screening children across public and private preschools in the Klang Valley, found that just over 15% failed a basic vision screen on the day.

These are local samples, not a national count, and none of them should be read as "this will happen to your child." What they consistently show is that when someone actually tests a room full of ordinary preschoolers who were otherwise considered fine, a meaningful number turn out to have something worth treating. Nobody had told those parents either.

What eye checks does Malaysia already offer before school?

More than most parents realise, if you know to ask for them. The klinik kesihatan child health book schedules a doctor's check of the eyes, including the red reflex, at birth, again at one month and at eighteen months. At four years there is a dedicated eye page: an outside look at the eyes, a visual acuity test for each eye, and a light-reflex test to check that both eyes point the same way, with a note to refer onward if anything looks off.

That four-year check is, for a lot of children, the one real chance before school. The full schedule for a baby's early eye checks sets out what each of those visits actually covers and what a doctor is looking for at each one. If your child is past four and that visit was missed, or the eyes were never looked at properly during it, that is worth going back for rather than waiting for Year 1 to arrive on its own.

What does an eye test look like for a child who cannot read letters yet?

Nothing like the chart you remember from your own school days, and that is by design. A baby's vision is checked by watching what they look at: whether they fix on a face and follow it, whether one eye is used to peer while the other drifts. A toddler and preschooler can often be screened with a special photo-screening camera, which does not need the child to say anything at all. How we test a young child's eyes walks through what each stage looks like in the room.

By around age three, most children can manage a proper acuity test using symbol charts built for children who cannot yet read, matched rather than named. None of this needs a cooperative, articulate six-year-old. It needs a child who can sit on a lap for a few minutes, which describes almost every three- to six-year-old I have ever met on a good day, and most of them on an ordinary one too.

Where do I take my child for this in Malaysia?

Start with whichever door is nearest and easiest to reach this month. A klinik kesihatan can do the four-year check if it has not happened yet. A registered optometrist at a kedai cermin mata can measure sight and pick up short-sightedness or a strong difference between the two eyes. Who checks a child's eyes in Malaysia sets out what each of those roles is actually allowed to do, and when the answer is a doctor instead.

Already going to the klinik kesihatan for anything else? Ask whether the 4-year eye page has been done.
Near a kedai cermin mata? A registered optometrist can screen sight the same visit.
Notice an eye that turns, sits off-centre in photos, or does not seem to focus? Ask for a doctor, not a sight test.

None of these routes need a diagnosis to justify the visit. "Nobody has checked his eyes yet and he starts school this year" is, on its own, a perfectly good reason to book one. The children who do best with a lazy eye are not the ones whose parents worried the most. They are the ones who were brought in while there was still time to do something about it.

Ask for a doctor, not just a sight test, if…

One eye turns in or out, at any age.
You notice a white or pale glow in the pupil in a photograph.
One eye still seems to see poorly even with the correct glasses.
Your child tilts their head or covers one eye consistently to look at things.
There is a family history of squint, lazy eye or childhood cataract.

Common questions

At what age should a child first have an eye test in Malaysia?

There is no single official age for a first standalone eye test, but the klinik kesihatan child health book already schedules a doctor's eye check at birth, one month, eighteen months and four years. The four-year visit is a dedicated eye page with a vision test for each eye, and it is the last check most children get before school starts.

Does school vision screening in Malaysia cover preschoolers?

Only partly. The Ministry of Health's school health team does screen vision at preschool as well as at Year 1, Year 6 and Form 3, with coverage above 98% at each of those stages. The catch is that the preschool check only reaches government and government-aided preschools registered with the Ministry of Education. A child in a private tadika, or not yet in any preschool, can miss it entirely and reach Year 1 as the first formal check. Researchers studying the programme describe the wider preschool reach as limited, with too few specialists for the number of children.

Why does it matter if my child's eyes are checked before school rather than after?

Because amblyopia, a lazy eye, responds best to treatment started young: eye doctors aim to treat it before age seven or eight, since results become harder to achieve later. A child who reaches Year 1 without ever having a vision check has already used up some of that window before anyone has looked.

How would I even know if my child has a lazy eye? He never complains.

You likely would not know from watching him. A lazy eye rarely causes pain and is rarely noticed by the child or the parent, because the weaker eye has never known anything sharper to compare against. That is why it needs an actual test rather than waiting for a symptom that may never appear.

How common are vision problems in Malaysian preschoolers?

More common than most parents expect. A study of over a thousand kindergarten children in Segamat, Johor found visual impairment in 12.5% and amblyopia in 7.53% of the children examined. A separate exam of preschoolers in Kuching found reduced vision in about 5% of children, and a screening study in the Klang Valley found just over 15% failed a basic vision check, most of it previously unnoticed.

My child cannot read letters yet. How can anyone test their eyes?

Eye tests for children who cannot read are built around watching behaviour rather than naming letters: whether a baby fixes on a face and follows it, a photo-screening camera that needs no response at all, and picture or symbol charts for children old enough to point or match rather than read. By around age three most children can manage one of these properly.

Where should I take my child for a first eye check before school?

Whichever door is nearest. A klinik kesihatan can do the four-year eye page if it has not happened yet, and a registered optometrist at a kedai cermin mata can screen sight the same visit. If an eye turns, sits off-centre in photos, or does not seem to focus, ask for a doctor rather than a sight test.

References

AAO · Amblyopia (lazy eye) · www.aao.org
AAPOS · Amblyopia · aapos.org
AAO · Children's eye screening, tips and prevention · www.aao.org
Premsenthil M et al., Kuching paediatric eye study, BMC Ophthalmology 2013 · pmc.ncbi.nlm.nih.gov
Chew FLM et al., SEGPAEDS, Medical Journal of Malaysia 2018;73(1):25-30 · www.e-mjm.org
Kamaruddin H et al., Klang Valley preschool vision screening, Malaysian Journal of Medical Sciences 2022;29(2):102-113 · pmc.ncbi.nlm.nih.gov
Ariffin S et al., International Journal of Ophthalmology 2024;17(6):1102-1109 · pmc.ncbi.nlm.nih.gov
KKM · Rekod Kesihatan Bayi dan Kanak-kanak (0-6 tahun), Pindaan 03/2021 · hq.moh.gov.my

By Dr Chan Li Yen. General information only. It does not replace a consultation. If you are worried about your child's eyes or vision, please see an eye doctor.