No lens can guarantee that myopia stops in every child. What the two-year randomised clinical trial showed is that MiYOSMART slowed myopia progression by 59% and axial eye growth by 60% on average, compared with standard single vision lenses. In some children progression did stop altogether, but that is an outcome rather than a promise.

The two-year trial that established the effect was carried out in children aged 8 to 13. That does not rule out younger or older wearers, which happens often in practice. The decision belongs to your eye care professional, after examining your child and looking at how quickly their myopia is changing.

They are worn like any other pair of glasses. Nothing is placed on the eye and no medication is involved. The lenses themselves are made from polycarbonate 1.59, a highly impact-resistant material that has passed the high velocity impact drop ball test, and they carry built-in UV protection.

Two things happen in one lens. A clear zone at the centre corrects your child’s short-sightedness the way an ordinary lens does. Around it sit hundreds of small defocus segments, spread evenly across the lens surface, which create myopic defocus in front of the retina.

Most children adapt very quickly. Some are comfortable the moment the glasses go on, others take a few days, and it usually happens on its own through normal daily wear. If discomfort lasts longer than that, have the fit checked.

As much of the day as possible. The myopic defocus only works while the glasses are on, so the best results come when MiYOSMART is your child’s main pair rather than an occasional one.

Stopping MiYOSMART does not make myopia speed up. There is no rebound effect of the kind that can follow some other methods, such as atropine eye drops or orthokeratology. That said, a child’s sight may still change naturally over time.

Not from how well your child sees, since the correction is clear from day one. Progression is measured at the six-monthly reviews, where your eye care professional compares the prescription and the growth of the eye with the previous visit.

Yes. Clinical research in Europe and China found that combining MiYOSMART lenses with atropine eye drops was more effective at slowing myopia progression than either method on its own. Whether to combine methods is a decision for your child’s eye care professional.

To anyone looking at your child, MiYOSMART is practically indistinguishable from an ordinary single vision lens. The segments only catch the eye as a faint pattern when light reflects off a tilted lens.

Children usually notice the therapeutic zone as a slight softening of the image, which does not get in the way of everyday life. In the first days a few children report images seeming to swim, mild dizziness or a headache. These are uncommon and normally settle quickly; if they do not, have the fit checked.

Start with an eye care professional, who will examine your child and suggest something matched to their age, prescription and how fast it is changing.

Beyond that, check the evidence. Ask whether the effectiveness has been confirmed in clinical studies of that specific lens, not the underlying idea in theory, and whether those studies looked at safety as well as results.

The price is set by each practice, and it depends on the prescription, the version of the lens and the frame you choose, so it is worth asking when you book. The fitting and the follow-up appointments that go with myopia management are part of what you are paying for.