Can short-sightedness be reversed? What slowing means

Key takeaways

Short-sightedness is an eye that has grown too long. No treatment reverses it; the AAO says the goal of treatment is to keep it from getting worse.
A lower reading can come from pseudomyopia (a focusing spasm) or from ortho-k lenses that reshape the front of the eye overnight. Neither shortens the eye.
Low-dose atropine, myopia-control spectacle lenses, ortho-k and outdoor time have trial evidence for slowing progression. The 2025 Cochrane review rated the certainty from moderate to very low, and no one treatment works for every child.
In a Guangzhou trial, an extra 40 minutes outdoors a day cut new myopia over three years from 39.5% to 30.4% in six-year-olds.
AAPOS finds no evidence that eye exercises slow or improve myopia. Ask any product that promises reversal for a randomised trial in children that measured eye length.

No. Short-sightedness (myopia) means the eyeball has grown too long, and a long eye does not shrink back. What treatment can honestly do is slow the growth, and in a few cases a reading that looked like myopia turns out to be a tired focusing muscle. This page sets out what "reduced" can and cannot mean, what slows progression, and what the claims of reversal rest on.

Parents search for this in plain words: can the number go down, can it be reversed, is there anything that works. The answers below come from the 2025 Cochrane living review, the International Myopia Institute (IMI) reports, the American Academy of Ophthalmology (AAO) and one large outdoor-time trial. The decision for your child belongs to the eye doctor who has examined the eyes.

Can short-sightedness be reversed?

No treatment reverses it. The AAO states: "While myopia cannot be reversed, the goal of treatment is to keep it from getting worse." In most children myopia comes from the eye growing too long from front to back, so that light focuses in front of the retina. Glasses move the focus back onto the retina without changing the eye, which is why the child sees clearly with them and blurred without.

The number on the prescription is therefore a measurement of how long the eye has grown, and a lens corrects it from outside. Lowering the number by wearing weaker glasses has been tested and does not slow the eye; our page on wearing glasses all the time explains why. Action: if the child sees clearly with current glasses, the goal is to keep the next number from rising too fast, not to bring the old one back down.

So what can "reduced" honestly mean?

Three situations are sometimes described as a reduction, and none of them shortens a long eye. The first is pseudomyopia, a focusing spasm. The focusing muscle stays tight after a lot of close work, and the child reads as short-sighted on a quick test.

With drops that relax the muscle, the reading falls. In a study of 2,612 six-year-olds in Anyang, China, 24.1% had this pattern and only 5.2% were truly myopic. Pseudomyopia is a diagnosis for the eye doctor to make with drops, not a reason to expect a true myopic number to fall.

The second is orthokeratology (ortho-k). Special lenses worn overnight gently reshape the front surface of the eye, so the child sees without glasses the next day. The effect wears off when the lenses stop, and the eye underneath keeps whatever length it has; the ortho-k page covers the benefits and the infection risk.

The third is refractive surgery such as laser, which reshapes the cornea in adults whose prescription has stopped changing. It is not used to treat a growing child's eye, and the adult-only reasons are in refractive surgery in children.

What actually slows short-sightedness in children?

Four things have trial evidence for slowing progression: low-dose atropine eye drops, myopia-control spectacle lenses, orthokeratology and more time outdoors. They slow the average change. They do not stop it for every child. The IMI interventions report concludes that efficacy at an individual level "appears quite variable, with no one treatment being 100% effective in all patients".

The Cochrane living review of 2025 pooled 104 randomised trials in 17,509 children aged 4 to 18. In control children the refraction changed by a median of -0.65 D in a year and the eye lengthened by 0.33 mm. Against that background the review found that atropine, ortho-k and several lens designs reduced the change, with the certainty of the evidence ranging from moderate to very low.

For low-dose atropine the evidence was rated very low certainty. The authors also say it is uncertain how well the effects last, and that evidence on what happens after treatment stops is limited. Slowing myopia down gives the numbers side by side, and the single-treatment pages cover atropine drops and defocus glasses, so they are not repeated here.

What does "slower" look like in numbers? Take the control children, who lost a median of 0.65 D of focus in a year. Orthokeratology reduced the yearly lengthening of the eye by 0.18 mm on average (moderate-certainty evidence), against 0.33 mm of growth in controls. Spectacle lens designs and soft contact lenses reduced it by smaller amounts, and higher-dose atropine by about 0.33 mm, with more side effects to weigh.

These are averages across trials, not forecasts. Some children in the treated groups still progressed, and some in the control groups barely did, which is why the doctor tracks the individual child's number every few months and adjusts. Slower is a gain worth having, since a lower final number in adulthood means a lower risk of the eye complications that high myopia carries; high myopia explains what changes at a high number.

Does time outdoors reduce short-sightedness?

Outdoor time lowers the chance that a child becomes short-sighted in the first place, and the evidence for slowing an existing myopia is weaker. In a cluster randomised trial in Guangzhou, 1,903 six-year-olds in 12 schools were studied for three years. Schools that added a 40-minute outdoor class every day had 30.4% of children develop myopia, against 39.5% in the comparison schools. The change in refraction was 0.17 D smaller, and the difference in eye length was not statistically significant.

So outdoor time is a sensible habit for every child, and a part of a plan for a child who is already short-sighted, not a substitute for the treatments above. Two hours outside sets out how much light and time the studies used.

What about eye exercises, supplements and devices that promise to reverse it?

None has been shown to reverse myopia. For exercises, the American Association for Pediatric Ophthalmology and Strabismus (AAPOS) says plainly: "There is no evidence that vision therapy slows the progression of myopia or helps myopia get better," and that low-power "training glasses" are not very helpful. Orthoptic exercises are proven for eye movement problems such as convergence insufficiency, which is a different condition; eye exercises and vision therapy separates the two.

Supplements, eye massage, pinhole glasses and apps do not appear among the interventions with trial evidence in the Cochrane review. "Not shown to work" is not the same as "proven not to work", but a product that promises to bring a number down should be able to show a randomised trial in children, with eye length measured.

Repeated low-level red light is tested in trials and appears in the Cochrane results, with very low certainty and unanswered safety questions; the page on red light therapy covers it. A useful question for any seller: what happens to the eye when the product stops?

When should a child see the eye doctor about short-sightedness?

See the eye doctor when the child squints at the board, sits close to the screen, rubs the eyes often or needs a new prescription sooner than a year. Slowing is most useful early, because the eye grows fastest in the younger years. A child who is not yet short-sighted but has two short-sighted parents is also worth checking, as pre-myopia explains.

The doctor measures the prescription with eye drops where needed, checks whether it is true myopia or a focusing spasm, and may measure eye length. The question to bring: "Is this my child's eye growing, and which option fits?" Treatment is a plan with follow-up, and a stop is planned too, as in when can we stop myopia treatment. A sudden change in vision, a new squint, double vision or flashes and floaters needs a same-day visit.

See the eye doctor sooner if your child…

Squints at the board, sits very close to screens or rubs the eyes often.
Needs a new prescription sooner than once a year.
Has blurred vision that comes and goes after close work.
Has one eye clearly more blurred than the other.
Suddenly sees double, sees flashes or floaters, or has a new squint: go the same day.

Is this urgent? Today, this week or routine

Common questions

Can short-sightedness be reduced or reversed?

No treatment reverses it. Myopia is usually an eye that has grown too long, and the AAO states that the goal of treatment is to keep it from getting worse. Slowing the growth is what low-dose atropine, special lenses, ortho-k and outdoor time aim to do.

Can my child's glasses number go down?

A true myopic number does not usually go down in a growing child. A lower reading can happen when the first number was partly a focusing spasm (pseudomyopia) that eye drops then relaxed, and the eye doctor makes that call with drops.

Does wearing weaker glasses or no glasses reduce myopia?

No. Studies of leaving myopia partly uncorrected have not found a slowing benefit, and one trial found faster progression. The glasses correct the blur from outside and do not weaken the eye.

Do eye exercises work for short-sightedness?

AAPOS states there is no evidence that vision therapy slows the progression of myopia or helps myopia get better. Orthoptic exercises are proven for eye movement problems such as convergence insufficiency, which is a different condition.

How can I slow my child's short-sightedness?

Four options have trial evidence: low-dose atropine eye drops, myopia-control spectacle lenses, ortho-k lenses and more time outdoors. The Cochrane review of 104 trials found they slow the average change, with certainty from moderate to very low, so the eye doctor chooses with you.

Is laser eye surgery a way to reverse short-sightedness?

Laser reshapes the cornea in adults whose prescription has stopped changing, so they see without glasses. It does not shorten the eye, and it is not used on a growing child's eye.

Can short-sightedness stop on its own?

The number usually keeps rising through childhood and often settles in the late teens or early twenties. It does not go back down. Treatment aims to leave the child with a lower final number than they would otherwise have.

the reference pages Myopia control in Malaysia →

References

American Academy of Ophthalmology · Myopia control in children · www.aao.org
Cochrane Database of Systematic Reviews · Interventions for myopia control in children: a living systematic review and network meta-analysis (Lawrenson et al., 2025) · pubmed.ncbi.nlm.nih.gov
Investigative Ophthalmology & Visual Science · IMI Interventions for Controlling Myopia Onset and Progression Report (Wildsoet et al., 2019) · pubmed.ncbi.nlm.nih.gov
Investigative Ophthalmology & Visual Science · IMI Clinical Management Guidelines Report (Gifford et al., 2019) · pubmed.ncbi.nlm.nih.gov
JAMA · Effect of time spent outdoors at school on the development of myopia among children in China (He et al., 2015) · pubmed.ncbi.nlm.nih.gov
American Association for Pediatric Ophthalmology and Strabismus · Vision therapy · aapos.org
British Journal of Ophthalmology · Anyang Childhood Eye Study, pseudomyopia (Kang et al., 2021) · pubmed.ncbi.nlm.nih.gov

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.

Can short-sightedness be reduced or reversed? What slowing it really means