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| (Left) VisuMax 800 | (Right) VisuMax 500 |
Introduced in 2008, the VisuMax was the first device designed for SMILE, embodying ZEISS's innovative technology. SMILE is a vision correction procedure that utilizes femtosecond laser technology, which won the Nobel Prize in Physics in 2018.
The VisuMax equipment by ZEISS is developed based on femtosecond laser technology, using ultra-precise lasers to extract lenticules at a desired position and depth within the cornea. Thanks to ZEISS's extensive research and technological advancements, the VisuMax device enables precise lenticule extraction without damaging the front of the cornea, achieving excellent results in correcting myopia and astigmatism.
Let’s delve further into femtosecond lasers.
A femtosecond represents the smallest measurable unit of time in the world of molecules and atoms—an unimaginably brief interval. Moving at this incredible speed, femtosecond lasers are applied in various technological fields and were recognized with the Nobel Prize in Physics in 1999.
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| Femtosecond (1 fs) - Unit of the Molecular and Atomic World |
The femtosecond laser, which moves incredibly fast and is extremely small, can pass through the corneal epithelium without causing damage and selectively remove only the stroma. This makes it an optimized technology for vision correction.
Unlike regular lasers that simply fire in a straight line, femtosecond lasers are reflected multiple times in mirrors before being emitted. The company that has most precisely implemented this reflective system is ZEISS.
The process of generating a uniform and precise laser through several reflections significantly impacts the quality of the laser. ZEISS's independently developed precision scanning technology has been applied to the VisuMax, making it the only device capable of laser irradiation along the XYZ axes in third-generation vision correction techniques.
ZEISS's technology and the precision scanning system are so advanced that they can focus accurately on a tiny coin on the moon from Earth. Why is ZEISS's precision scanning technology so revolutionary when applied to SMILE surgery?
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| ZEISS's Precision Scanning Technology Enables Faster and More Uniform Laser Irradiation |
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| Laser Overlap Causing Bubble Formation |
To get straight to the point, this technology is significant because it allows fast and accurate laser irradiation, enabling the smooth and precise extraction of corneal stroma.
When the laser is irradiated onto the cornea at consistent intervals, it minimizes the impact on the surrounding corneal tissue, allowing for the lenticule to be extracted smoothly without the "bubble phenomenon." The bubble phenomenon occurs when the laser is focused with inconsistent intervals and energy.
As previously mentioned, SMILE has proven its effectiveness and safety for over 15 years, based on its unique technological prowess. If you're considering vision correction, it's important to choose a method that combines not only the latest technology but also reliable equipment and extensive experience.
Thank you for your time.
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