Each year on 7th April, World Health Day invites us to pause and reflect on the state of global health. This year’s theme, “Together for Health. Stand with Science,” feels particularly resonant.
This year’s focus on better health based on data is a call to trust in evidence-based medicine, to celebrate the breakthroughs that science makes possible, and to recognise that better health outcomes do not happen by accident. They happen because researchers, clinicians, and engineers commit themselves to pushing beyond what was previously thought achievable.
At Focus Clinics, standing with science is not a slogan. It is the reason we do what we do.
This World Health Day, I want to share something that genuinely excites me: a technology that represents the most significant leap forward in laser vision correction I have seen in my thirty-year career. It is called Ray-Tracing Guided LASIK, and we are proud to be the first and only clinic in the United Kingdom to offer it.
Why “Stand with Science” Matters Right Now
The WHO’s 2026 campaign launches a year-long global effort to celebrate scientific achievement and the multilateral cooperation that turns evidence into action. It spotlights the One Health approach, recognising that the health of people, animals, plants, and the planet is deeply interconnected.
At its heart, the campaign is asking all of us, whether we are surgeons, scientists, or simply patients who have benefited from modern medicine, to engage with evidence, trust the process, and share the stories of what science makes possible.
Vision is one of the most fundamental aspects of human health, yet it’s frequently overlooked in wider public health conversations. Nine out of ten people rank vision as their most important sense. In a research study, people would choose 4.6 years of life in perfect health over 10 years of life with complete sight loss.
The World Health Organisation estimates that at least 2.2 billion people globally have near or distance vision impairment. Of those, more than 1 billion cases are either preventable or have not yet been adequately addressed.
When science delivers a genuine breakthrough in vision correction, that matters enormously, not just for the individual sitting in the surgical chair, but for the broader conversation about what evidence-led medicine can achieve.
The Breakthrough: Ray-Tracing Guided LASIK
For most of its history, laser eye surgery has worked from a relatively simple premise: measure the prescription a patient wears in their glasses, and correct for that. The maths used is quite basic, however, and several simplifications are needed to allow a one-size-fits-most procedure.
Despite the above limitations, the results have been very good. Our own peer-reviewed published outcomes show 100% of patients achieving 20/20 vision or better for short-sight up to -6.00 dioptres.
But the question that has always driven us forward is this: what if we could do better than very good?
20/20 is often mistakenly assumed to be the best possible vision. It isn’t. Most normal eyes can attain even better, called 20/16, the next line down on the chart. In fact, the human eye can potentially read even smaller lines, called 20/12 and 20/10, the latter being the true limit of human vision (only found naturally in 1% of the world’s population).
Standard laser eye surgery struggles to reach these higher levels. In a recent FDA trial using the WaveLight laser, the world’s most popular system for laser vision correction, only 22% could see down to 20/12, and hitting 20/10 wasn’t even recorded due to its rarity.
However, Ray-Tracing Guided LASIK has changed that. Using the latest approach, the majority of eyes can achieve 20/12, and nearly 10% can see 20/10. Developed using Alcon’s WaveLight Plus technology and the Sightmap diagnostic tool, it represents the first truly personalised laser eye correction procedure of its kind. Rather than treating the prescription, it treats the eye itself, in its full three-dimensional complexity.
“Ray-tracing gives the best LASIK results we have ever seen. We test and refine the treatment on a working 3D digital clone of your eye before you ever go near the laser room. For the first time, we are moving beyond 20/20 to achieve high-definition vision for our patients.”
Mr David Allamby, FRCOphth, Founder and Lead Surgeon, Focus Clinics
How It Works: The Science Behind Ray-Tracing
The process begins with the Sightmap scanner, which traces how up to 2,000 individual beams of light move through every part of your eye with a precision of 1/100,000th of a millimetre.
The Sightmap measures not just the surface of the cornea but every optical component, including the length of the eyeball and its curvature. From this extraordinary volume of data, 140,000 data points, a unique three-dimensional digital model of your eye is created. We call it the Eyevatar.
Building a map of your eye
The digital eye clone is where the real transformation happens. Rather than proceeding directly to surgery, we use this digital twin to run the procedure virtually, testing and refining the precise treatment pattern before a laser ever touches the eye.
This creates a roadmap for us to follow during surgery, increasing the safety of the procedure and improving the patient’s long-term outcomes. We know the outcome before the patient steps into the operating room because we’re able to conduct the surgery on a virtual 3D map of the eye hundreds of times before doing it for real.
The results
This approach allows us to correct not only standard refractive errors such as short-sightedness and astigmatism, but also the subtler, higher-order aberrations that standard LASIK cannot touch: the microscopic imperfections that affect contrast sensitivity, cause halos and starbursts around lights at night, and quietly diminish the quality of vision even in people who technically see 20/20.
The results speak for themselves. In clinical data from Alcon, 98% of patients achieved 20/20 vision or better following the procedure, 83% achieved 20/16 or better, and 45% reached 20/12.5, well into what is classified as super-vision. 99% of Alcon’s clinical study participants said they would undergo the procedure again.
What It Feels Like: Alex’s Story
Alex underwent Ray-Tracing Guided LASIK at Focus Clinics in 2025. Before the procedure, Alex wore glasses for driving, watching television and attending concerts. Although he rarely left the house without his glasses, just in case. The decision to explore laser eye surgery came after Alex began working with Focus Clinics on their marketing.
“I initially wanted standard laser eye surgery until I learned about ray-tracing. The fact that the procedure is perfected on a digital clone of your eye before the actual surgery was the biggest differentiator for me. I knew the result was already pre-determined to be successful.”
Alex Fiske, Ray-Tracing Guided LASIK Patient
What surprised Alex most was how swift the procedure itself was. The surgery was completed in approximately two minutes per eye, requiring only that Alex remain still and look at a fixed green dot. Within five minutes of the procedure finishing, the world had already begun to look different.
“The next morning, I could see individual bricks on a house outside my office window and separate leaves on a tree. That was the same level of clarity I’d only ever had with my glasses on. Within 24 hours, I was safe to drive without glasses for the first time in years.”
The full impact became clear over the weeks that followed: watching television without hunting for glasses, driving without a second thought, seeing clearly underwater whilst snorkelling on holiday several months after the surgery. The kind of moments most people take for granted, and those with impaired vision quietly learn to work around.
Alex’s advice to anyone considering the procedure is straightforward: do the research through third-party, organic sources rather than relying solely on clinic-produced content, check Google and Trustpilot reviews, and be willing to invest in the quality of care. As Alex put it: “This is your eyesight. It is not the place to cut corners.”
The Importance of Aftercare
One thing that sets Ray-Tracing Guided LASIK apart at Focus Clinics is not only what happens in the operating room but what happens afterwards. Alex noted spending more time in follow-up appointments than in the surgery itself, with comprehensive machine-based tests and clinical reviews at 24 hours, one week, six months, and one year post-procedure. The aftercare package includes all necessary eye drops and detailed instructions, and the Focus team remains available throughout the recovery period.
“The procedure takes minutes. The relationship with our patients lasts years. Every follow-up appointment is an opportunity to confirm that the result we achieved together is holding, and to ensure our patients are getting the full benefit of what this technology makes possible.”
Mr David Allamby, FRCOphth, Founder and Lead Surgeon, Focus Clinics
Standing With Science Means Going Further
This World Health Day, the message from the WHO is clear: science works, and we are better when we trust it, invest in it, and share its achievements. Ray-Tracing Guided LASIK is a demonstration of exactly what happens when the scientific community refuses to accept “good enough” as the standard.
Standard LASIK changed millions of lives. Ray-Tracing Guided LASIK is changing what those lives look like, in sharper detail, with better night vision, and with a level of personalisation that was simply not possible until now. We are proud to be leading that change in the UK.
If you would like to find out whether you are a suitable candidate for Ray-Tracing Guided LASIK, we would be delighted to speak with you. Our consultations are thorough, our team has walked the same journey as our patients, and our commitment to your outcome does not end when you leave the clinic.
Stand with science. See what it can do for you.
