SMILE LASIK vs. SMILE Pro LASIK: What’s the Difference?
- Seoul | Busan BGSS Eye Clinic
- 1 day ago
- 5 min read
Vision correction technology has advanced significantly over the past decade. Among the most innovative procedures available today is SMILE LASIK, a minimally invasive laser vision correction surgery known for its fast recovery and long-term stability.
After its first procedure in 2008 and its international launch in 2011, SMILE LASIK quickly became a preferred method for treating refractive errors such as myopia (nearsightedness) and astigmatism. The procedure uses the ZEISS VisuMax 500 femtosecond laser, combining the advantages of traditional LASIK, fast visual recovery, and minimal discomfort, with the flapless stability of PRK.
Building on years of surgical experience and technological innovation, ZEISS introduced SMILE Pro LASIK in 2023, powered by the VisuMax 800 femtosecond laser. This next-generation platform improves surgical precision, automation, and speed.
So, what exactly differentiates SMILE LASIK and SMILE Pro LASIK? Let’s take a closer look.
Summary
SMILE LASIK is a flapless, 2 mm–incision procedure using the ZEISS VisuMax 500 that preserves corneal stability and enables fast recovery with minimal discomfort. SMILE Pro LASIK upgrades to the VisuMax 800, delivering much faster treatment times (about 8–10 seconds vs. ~25 seconds), enhanced automation (CentraLign for centration and OcuLign for cyclotorsion), and greater precision with smoother lenticule separation. These advances reduce risks such as suction loss and glare/halos, improve astigmatism correction, and may reduce dryness by limiting corneal nerve disruption. Both techniques effectively correct myopia and astigmatism, with BGSS Eye Clinic highlighted as a leader in adopting the latest platform in Korea.
SMILE LASIK vs. SMILE Pro LASIK Comparison
Feature | SMILE Pro LASIK | SMILE LASIK |
Equipment | ZEISS VisuMax 800 | ZEISS VisuMax 500 |
International Release | 2023 | 2011 |
FDA Approval | Yes | Yes |
Operating Method | Smart Robotic Assistance | Manual |
Incision Size | 2 mm | 2 mm |
Corneal Tissue Extraction | Stromal layer | Stromal layer |
Ablation Time | Under 10 seconds | Under 25 seconds |
Eye Fixation Time | Under 13 seconds | Under 27 seconds |
Centration Aid | Automatic (CentraLign) | Manual |
Cyclotorsion Alignment | Automatic (OcuLign) | Manual |
Energy Range | 75 – 260 nJ | 100 – 260 nJ |
What Makes SMILE LASIK Unique?
SMILE LASIK (Small Incision Lenticule Extraction) is a flapless laser vision correction procedure designed to preserve the natural structure of the cornea.
Unlike traditional LASIK surgery, SMILE creates only a small 2 mm incision through which a tiny piece of corneal tissue (called a lenticule) is removed. Because there is no corneal flap, the procedure offers several advantages:
Greater corneal stability
Reduced risk of external trauma
Lower likelihood of dry eye symptoms
Faster recovery and minimal discomfort
The small incision also helps protect the eye from bacteria, foreign bodies, temperature changes, and humidity, allowing patients to return to normal activities as early as the next day.
How SMILE Pro LASIK Improves the Procedure
The key difference between SMILE LASIK and SMILE Pro LASIK lies in the laser technology used during surgery.
SMILE Pro LASIK utilizes the ZEISS VisuMax 800 femtosecond laser, while conventional SMILE LASIK uses the VisuMax 500. The upgraded laser system dramatically improves the speed and precision of the procedure.
Faster Surgical Time
One of the most noticeable improvements is the significantly reduced treatment time:
SMILE Pro LASIK: approximately 8–10 seconds per eye
SMILE LASIK: approximately 25 seconds per eye
A faster surgery offers several important benefits:
Reduced risk of suction loss
Lower patient anxiety during the procedure
Improved surgical efficiency
Less corneal swelling
Shorter laser exposure may also help reduce corneal nerve disruption, thereby lowering the risk of post-surgical dryness.
Advanced Automation for Better Accuracy
SMILE Pro LASIK also introduces two advanced automated technologies designed to improve surgical accuracy and visual outcomes.
CentraLign: Precise Eye Alignment
CentraLign is a computer-controlled centration system that aligns the pupil center with the corneal vertex during docking.
This automated alignment improves:
Surgical precision
Visual quality after surgery
Reduction of glare and halos
OcuLign: Automatic Cyclotorsion Compensation
When patients lie down for surgery, the eye can rotate slightly. This rotation (known as cyclotorsion) can affect the accuracy of astigmatism correction.
OcuLign technology automatically detects and compensates for this rotation, recalculating the treatment pattern in real time. This allows for more precise astigmatism correction and improved overall visual outcomes.
Improved Laser Precision
All femtosecond lasers create microscopic bubbles during lenticule formation. With the VisuMax 800, the laser’s increased frequency and precision significantly reduce bubble clustering, allowing for smoother lenticule separation and improved surgical consistency.
A Global Leader in SMILE LASIK Surgery
As the first private clinic in Korea to acquire the ZEISS VisuMax 500 femtosecond laser in 2008, CEO Dr. Jong-Ho Lee introduced the SMILE surgical method in 2010.
Through ongoing research and a high surgical volume, BGSS Eye Clinic was designated a ZEISS SMILE Master Center in 2015.
With the adoption of the VisuMax 800 and SMILE Pro LASIK in 2023, BGSS Eye Clinic continues to lead the field of advanced laser vision correction, having treated over 10 million eyes worldwide.
Considering SMILE Pro LASIK in Korea?
For patients seeking advanced vision correction surgery in Seoul, SMILE Pro LASIK represents the latest innovation in flapless laser eye surgery. With faster treatment times, enhanced automation, and improved surgical precision, it offers a highly refined approach to correcting refractive errors.
If you are considering SMILE LASIK or SMILE Pro LASIK, a comprehensive eye examination with an experienced surgeon is the best way to determine which procedure is most suitable for your eyes.
Q&A
Question: What is the main difference between SMILE LASIK and SMILE Pro LASIK?
Short answer: SMILE Pro LASIK operates on the newer ZEISS VisuMax 800 femtosecond laser, while SMILE LASIK uses the VisuMax 500. The Pro platform includes smart robotic assistance and advanced automation (CentraLign for centration and OcuLign for cyclotorsion), provides faster treatment and fixation times, offers a wider energy range starting at lower energy (75–260 nJ vs. 100–260 nJ), and allows for smoother lenticule separation. Both are flapless, 2 mm–incision procedures that remove a stromal lenticule to correct myopia and astigmatism, and both are FDA-approved.
Question: How much faster is SMILE Pro LASIK, and why does speed matter?
Short answer: SMILE Pro LASIK usually takes about 8–10 seconds per eye (fixation under 13 seconds), compared to roughly 25 seconds per eye (fixation under 27 seconds) with SMILE LASIK. The shorter treatment time helps lower the risk of suction loss, reduce patient anxiety, enhance surgical efficiency, decrease corneal swelling, and, by limiting corneal nerve disruption, potentially reduce post-surgical dryness.
Question: What do CentraLign and OcuLign do, and how do they affect outcomes?
Short answer: CentraLign automatically aligns the pupil center with the corneal vertex during docking, enhancing surgical precision, visual quality, and reducing glare and halos. OcuLign detects and compensates for cyclotorsion (eye rotation when lying down) in real time, enabling more accurate astigmatism correction. These automated steps replace manual alignment in conventional SMILE LASIK.
Question: Does SMILE Pro LASIK improve safety or side-effect profiles compared with SMILE LASIK?
Short answer: Both procedures are minimally invasive and flapless, involving a 2 mm incision that supports corneal stability, reduces the risk of dry eye symptoms, and allows for quick recovery, with patients often resuming normal activities as early as the next day. SMILE Pro LASIK’s faster, more precise laser and smoother lenticule separation can further decrease issues like suction loss and help lessen visual disturbances such as glare and halos.
Question: Who should consider SMILE Pro LASIK, and where is it available in Korea?
Short answer: Anyone eligible for SMILE LASIK who desires faster, more automated, and potentially more precise treatment might consider SMILE Pro LASIK. In Korea, BGSS Eye Clinic stands out as a leader: it was the first private clinic to acquire the VisuMax 500 in 2008, pioneered the SMILE surgical method in 2010, became a ZEISS SMILE Master Center in 2015, and adopted the VisuMax 800/SMILE Pro in 2023. A thorough eye exam with an experienced surgeon will help determine whether SMILE LASIK or SMILE Pro LASIK is better suited for your eyes.
