SMILE LASER TREATMENT
What is the SMILE Technique?
The latest development in corneal refractive correction is the SMILE technique, developed by the company Zeiss. This technique, which stands for Small Incision Lenticule Extraction, involves removing a small piece of tissue through a 2–4 mm incision using a femtosecond laser, without lifting a flap.
Compared to femto-LASIK, this surgery is faster as it uses a single device. Recovery is much quicker, corneal biomechanics are better preserved, and because the nerves are less affected, dry eye occurs less frequently.
SMILE PRO
Laser Eye Surgery
In 2024, the company Zeiss further advanced its SMILE treatment technology by launching the VisuMax Pro. With this new device, the treatment time has been reduced to under 10 seconds. Astigmatism correction has become more precise thanks to an integrated eye-tracking system, and hyperopia treatments—which were previously not possible—have been added to the procedure portfolio.
Currently, the VisuMax Pro can treat myopia up to 10 diopters, hyperopia up to 5 diopters, and astigmatism.
Getting Rid of Glasses with SMILE Treatment
It has become SAFER and MORE COMFORTABLE.
The correction of refractive errors—known as myopia, hyperopia, and astigmatism—through procedures applied to the transparent outer layer of the eye, the cornea, has been performed for over 50 years.
The goal is to reshape the cornea, essentially turning it into a natural lens, so that incoming light is properly focused on the retina.
This process, which began in the 1970s with Radial Keratotomy (RK), took a significant leap forward in 1989 with the introduction of the Excimer Laser, leading to widespread adoption around the world.
In 1991, the LASIK technique was developed, in which a flap is created in the cornea and the Excimer Laser is applied to the deeper layers. This advancement shortened the healing process, reduced postoperative discomfort, and provided more stable refractive outcomes.
By 2005, femtosecond lasers began to replace mechanical blades in the flap creation phase of LASIK. These lasers allowed for precise incisions at desired depths and shapes within the cornea, making the LASIK procedure significantly safer. As a result, the technique became known as FemtoLASIK.
SMILE–LASIK–PRK
Comparison
| Feature | PRK (1980s) | LASIK (1990s) | SMILE (2010s) |
|---|---|---|---|
| Surgical Technique | Epithelium is removed, laser applied | Flap is created, laser applied | Small incision, lenticule is removed |
| Incision Size | None (superficial) | Around 20 mm | Only 2-4 mm |
| Recovery Time | Long (2-4 weeks) | Medium (1-2 days) | Short (back to normal within 1 day) |
| Pain / Discomfort | Medium-High | Low | Very low |
| Dry Eye Risk | Medium | Higher | Lower (nerves preserved) |
| Corneal Strength | High | Medium | High (biomechanics better preserved) |
| Technology | The oldest | Widespread and reliable | The newest and advanced |
| Suitable Patient Profile | Thin corneas, athletes, etc. | Generally most people | Thin corneas, active lifestyle individuals |
SMILE LASER TREATMENT
Frequently Asked Questions
What is SMILE Laser?
SMILE (Small Incision Lenticule Extraction) Laser is a third-generation laser treatment method used to correct refractive errors such as myopia and astigmatism, applied with minimal incisions. It is based on the removal of a small tissue created within the cornea using femtosecond laser technology. This allows the treatment to be completed without the need for large flap incisions in the eye.
Who is SMILE Laser Treatment Suitable For?
SMILE laser may be a suitable treatment option for the following individuals:
Those over the age of 18 with stable prescriptions for the past year
People with myopia between -1.00 and -10.00 diopters
Individuals with astigmatism up to -0.25 to -5.00 diopters
People with sufficient corneal thickness
Those with generally good eye health
Advantages of SMILE Laser
- Incision-free and stitch-free: The procedure is performed through a small 2-4 mm incision.
- Less dryness: Corneal nerves are less affected, reducing the risk of dry eyes.
- Quick recovery: The eye recovers much faster, allowing for a quick return to daily activities.
- Lower risk of complications: Since no flap is created, there is no risk of displacement or tearing.
- Painless procedure: Pain is typically not felt during or after the procedure.
What is the Process of SMILE Laser Treatment?
- Pre-examination: It is determined whether your eye structure is suitable for the treatment.
- Laser application: The procedure takes approximately 10 minutes. Both eyes can be treated in the same session.
- Recovery process: Vision typically starts to improve within the first 24 hours. Full visual clarity is usually reached within 1 week.
What Should Be Considered After SMILE Laser?
- Avoid rubbing your eyes for the first 24 hours.
- Refrain from wearing makeup and stay away from dusty environments for 1 week.
- Use the eye drops prescribed by your doctor regularly.
- Wear sunglasses to protect your eyes from the sun.
Is SMILE Laser Permanent?
Yes, the correction made to the eye after the treatment is permanent.
Is it a painful procedure?
No, the procedure is performed with local anesthetic drops, so no pain is felt.
Can I return to work after the procedure?
Most patients can return to their daily activities the next day.
