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2026.10.23People who have visited multiple clinics for consultations often notice something unusual. The procedure name is the same, but the equipment being described varies from clinic to clinic. Today, we will answer just one core question: Why do renowned eye clinics universally choose ZEISS VisuMax?
SMILE (Small Incision Lenticule Extraction) is originally the name of a surgical procedure developed by ZEISS (Germany) using the VisuMax laser. It involves creating a thin lenticule inside the cornea and extracting it through a small incision to reshape the cornea and correct vision.
As this method gained recognition, other companies introduced surgeries based on similar principles.
The underlying principles are similar. What differs is the equipment, the software, and the extensive track record built upon them.
Ultimately, patients undergoing vision correction want two things: to see as clearly as planned, and for that vision to last a long time.
Eye clinics look for the exact same things when selecting equipment. Does it yield predictable results? Do those results remain stable over time? These two factors can be summed up in one word: 'Stability of surgical outcomes.'
BGN Eye Clinic Jamsil Medical Team CommentLet's summarize the three objective reasons, backed by data, why VisuMax continues to be the preferred choice.
After more than 10 years of research, ZEISS introduced SMILE, and to date, over 12 million procedures have been performed in more than 80 countries (based on ZEISS data announced in September 2025). A high number of surgeries means the outcomes have been verified across a vast diversity of eyes. This provides a robust foundation for doctors to predict outcomes accurately.
SMILE using VisuMax received FDA approval for myopia correction in 2016. The clinical basis was a study of 336 eyes across 5 institutions in the U.S., with outcomes monitored for over 12 months. In 2024, the new VisuMax 800 and SMILE pro also received FDA approval.
Studies observing changes in visual acuity and refractive errors over a 10-year period following SMILE surgery have already been published in academic journals. This is a record that can only be accumulated over time. Being able to answer the question, "Will my eyes still be okay years after the surgery?" with concrete data is the final piece of the stability puzzle.
This is why many clinics hold on to VisuMax even as new equipment emerges. You only undergo surgery once, but you have to live with those eyes for decades. Predictable results that last: what clinics want to uphold and what patients desire are ultimately the same.
BGN Eye Clinic introduced SMILE in 2009 and is an official ZEISS SMILE Center. Currently operating with 8 VisuMax machines, we have successfully performed over 110,000 SMILE surgeries (based on internal hospital data).
If you ask why we have stuck to the same choice for nearly 17 years, the answer is simple: Stability.
What matters more than the name 'SMILE' is knowing which equipment is being used and the depth of the track record behind it. However, the best surgery for your eyes is determined through a comprehensive examination. Please get tested first and decide in consultation with the medical team.