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HAL spectacle lenses slow myopia progression and axial elongation in Indian children and adolescentsNew Glasses May Slow Kids' Worsening Vision by 83%

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Key Takeaway
Consider HAL lenses for myopia control in Indian children, but note retrospective design and limited follow-up.

This retrospective study evaluated the efficacy of Highly Aspherical Lenslets (HAL) spectacle lenses for myopia control in 372 Indian children and adolescents aged 4–16 years across 10 ophthalmic centers in India. The intervention involved HAL spectacle wear compared to an untreated year, with follow-up ranging from 6 to 24 months after prescription. Primary outcomes were myopia progression and axial elongation.

Main results showed that annual myopia progression was -0.72 ± 0.47 D/year during the untreated period, reducing to -0.11 ± 0.29 D/year with HAL spectacle wear, indicating a treatment effect of 0.54 D/year. Axial elongation was 0.11 ± 0.16 mm/year with HAL lens wear, representing approximately 62% relative slowing of elongation compared to the untreated period. Secondary outcomes included comparison with published meta-regression models, but specific results were not detailed.

Safety and tolerability data, including adverse events, serious adverse events, and discontinuations, were not reported. Key limitations include the retrospective design and limited follow-up period, which may introduce bias and restrict long-term conclusions. Funding and conflicts of interest were also not reported.

In practice, this study supports HAL lenses as a potential myopia control intervention in this population, but clinicians should consider the observational nature and lack of safety data when making decisions. Further prospective studies are needed to confirm efficacy and assess tolerability.

Could These Glasses Save Your Child's Eyes?

Every parent knows the moment. Your child squints at the TV, sits too close, or says the classroom board looks blurry.

Then comes the eye exam, the prescription, and the worry: will it just keep getting worse each year?

For millions of families, the answer has usually been yes. But a new study out of India suggests that a special kind of eyeglass may finally change that.

A Growing Problem Parents Can't Ignore

Myopia, or nearsightedness, is when far-away things look blurry. It often starts in childhood and gets worse each year until the eyes stop growing.

It is now one of the fastest-growing health problems in kids worldwide. Doctors expect half the world to be nearsighted by 2050.

And it is not just about thicker glasses. Severe myopia raises the risk of serious eye problems later in life, like retinal damage and glaucoma.

Until recently, regular glasses could help kids see clearly, but they did nothing to slow the condition down.

What We Used to Believe

For decades, doctors thought nearsightedness just ran its course. You got stronger glasses every year and hoped for the best.

But here's the twist. Scientists now know that how the eye focuses light on the sides, not just the center, helps decide how fast the eye keeps growing.

That discovery opened the door to a new kind of lens. Instead of just sharpening the middle of your vision, it gently changes the signal the eye gets from the edges, telling it to slow down growth.

Tiny Bumps, Big Idea

The lenses in this study are called HAL lenses, short for Highly Aspherical Lenslets. The brand name is Stellest, made by Essilor.

Picture a regular lens as a smooth window. Now picture hundreds of tiny, almost invisible bumps placed in a ring around the center.

Those bumps act like a soft brake pedal for the eye. The center still gives clear vision, but the bumps send a "slow down" message to the growing eyeball.

Think of it like training wheels for a child's eyes. They still move forward, just not as fast.

Inside the SOLIDITY Study

Researchers looked at 372 nearsighted children and teens ages 4 to 16, treated at 10 leading eye centers across India.

They compared each child's vision change in the year before the new lenses to the year after starting them. This let each child act as their own "before and after" test.

The study was retrospective, meaning doctors used records that already existed. They then compared results to what would normally happen without treatment.

Before treatment, the children's nearsightedness was getting worse by about 0.72 diopters each year. That is a noticeable jump in prescription strength.

After one year with the new lenses, that yearly change dropped to just 0.11 diopters. That is about 83% less worsening than expected.

The eyeball itself also grew more slowly. Normally, a nearsighted child's eye stretches about 0.29 mm each year. With the lenses, it only grew 0.11 mm, a 62% slowdown.

In plain terms, kids needed far fewer prescription bumps, and their eyes stayed closer to a healthy shape.

But There's More to the Story

This doesn't mean your child's nearsightedness will stop completely.

The lenses slow it down, but they do not reverse it. And not every child may respond the same way.

Still, even a partial slowdown over many years can mean the difference between mild and severe myopia as an adult.

Where This Fits in the Bigger Picture

Eye doctors have been testing several ways to slow myopia, including special contact lenses and low-dose atropine eye drops.

This study adds strong real-world support for the HAL lens option. Unlike drops or contacts, these are simply worn like normal glasses, which can be easier for young children and busy families.

It also shows the lenses work outside of tightly controlled trials, in everyday clinic settings, with kids of many ages and backgrounds.

HAL lenses, sold as Stellest, are already available in many countries, including parts of the US, Canada, Europe, and Asia. Availability and insurance coverage vary.

If your child is nearsighted and getting stronger prescriptions each year, it is worth asking your eye doctor about myopia control options. These lenses are one of several tools, and the best choice depends on your child's age, prescription, and lifestyle.

Do not stop current treatments or switch glasses on your own. A pediatric eye specialist can guide the safest plan.

What the Study Couldn't Prove

This research has real limits. It was retrospective, which means it looked back at past records instead of testing kids in a planned experiment.

The follow-up was also short, between 6 and 24 months. Myopia plays out over many years, so longer studies are needed to see if the benefit holds.

And the study was done only in India, so results may differ in other groups.

The researchers say the next step is long-term, forward-looking studies that track children for several years. Those trials will help confirm whether the early benefits keep adding up.

If they do, lenses like HAL may become a standard part of childhood eye care, much like braces are for teeth. For now, the evidence is promising, the approach is low-risk, and millions of kids could eventually see a clearer future.

Study Details

EvidenceLevel 5
PublishedApr 2026
View Original Abstract ↓
Objective: The study aims to evaluate the real-world effectiveness of Highly Aspherical Lenslets spectacle (HAL; Essilor(R) Stellest(R)) in slowing myopia progression among Indian children and adolescents aged between 4 and 16 years. Methods and analysis: This was a multicentre retrospective study conducted across 10 leading ophthalmic centers. The study participants comprised children aged between 4 and 16 years who were prescribed HAL spectacles (Essilor(R) Stellest(R)). Data were extracted from electronic medical records at three time points: T1: One year prior to intervention; T2: Baseline at HAL spectacle prescription; T3: 6 to 24 months after prescription. The primary endpoint was the myopia progression and axial elongation in the year following prescription, compared with the untreated year and with published meta-regression models. Only data from the right eye were analysed, with the expected physiological progression estimated based on the individual progression trajectory after adjusting for age-related slowing as reported in published meta-regression models. Results: A total of 372 myopic children were included in the study. The annual myopia progression was -0.72 {+/-} 0.47 D/year during the untreated period, reducing to -0.11 {+/-} 0.29 D/year with HAL spectacle wear. The expected progression without treatment was -0.65 D/year, based on trajectory-adjusted modelling, indicating a treatment effect of 0.54 D/years and an estimated 83% slowing in myopia progression compared to expected progression. The expected axial elongation under physiological conditions was 0.29 mm/year, estimated using age-adjusted meta-regression models; with HAL lens wear, axial elongation was 0.11 {+/-} 0.16 mm/year, corresponding to a [~]62% relative slowing of elongation. Conclusion: The present study demonstrates the real-world evidence validating the efficacy of HAL lenses as an effective myopia control intervention in Indian children and adolescents. The retrospective design and limited follow-up period warrant future prospective, long-term studies to validate these findings.
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