Treatment of Refractive Errors with Smart Surf (TransPRK)
This is a treatment for myopia, hyperopia, and astigmatism without any contact with the patient’s eye. There is no suction and no use of a blade (Transepithelial photorefractive Keratectomy): “No-Touch” Treatment Technique, free from any contact with the eye at every step. There is no use of instruments to scrape the corneal surface, no locking, suction, or cutting of the cornea.
Treatment of Refractive Errors with Femto-LASIK or “Blade-Free LASIK”
This is a method to correct refractive errors such as myopia, hyperopia, and astigmatism using a device called a femtosecond laser to create a thin corneal flap instead of using a microkeratome blade as in traditional LASIK. Then, an excimer laser is used to reshape the corneal curvature to correct myopia, hyperopia, or astigmatism.
SmartSight (ReLEx) Blade-Free Technology for Correcting Myopia and Astigmatism
SmartSight is the most advanced treatment for refractive errors today, using a laser to reshape the corneal curvature by separating the corneal layers into a lenticule within the corneal tissue and then removing the excess corneal tissue through a small incision of 2-5 mm. It is developed from the traditional ReLEx surgery with AI systems controlling and calculating the shape of the lenticule and iris recognition technology to track eye movement and rotation before and during surgery, resulting in highly accurate and more effective correction, especially for astigmatism.
Read more about SmartSight (ReLEx)
Differences Between Types of LASIK
| Smart Surf (TransPRK) | Smart LASIK (Femto) | Smart Sight (ReLEx) | |||||||
| Technology | SCHWIND AMARIS 1050 Hz | SCHWIND AMARIS 1050 Hz SCHWIND ATOS Femtosecond Laser |
SCHWIND ATOS Femtosecond Laser | ||||||
| Treatment Procedure | Uses Excimer Laser to remove the corneal epithelium and reshape the cornea in one step | Uses Femtosecond Laser to create a corneal flap and then Excimer Laser to reshape the inner corneal layers | Uses SCHWIND ATOS Femtosecond Laser to reshape corneal curvature and thickness, then removes the excess corneal lenticule through a small 2-4 mm incision | ||||||
| Correctable Vision Range | Myopia, hyperopia, and astigmatism combined up to 6.00 D | Hyperopia +6.00 D to -12.00 D and astigmatism up to -6.00 D | Myopia including astigmatism from -0.50 D to -14.00 D and astigmatism +6.00 D to -6.00 D | ||||||
| Incision Characteristics | Circular area on the corneal surface about 8 mm, not visible to the naked eye | Circular line on the corneal surface about 9 mm, not visible to the naked eye | Line on the corneal surface, small incision 2-4 mm, not visible to the naked eye | ||||||
| Recovery Time | Eye irritation and pain for about 3-4 days, clear vision in 4 weeks | Vision possible 1 day after surgery | Vision possible 1 day after surgery | ||||||
| Advantages | 1. Reduces risk in cases where corneal flap creation may be difficult, such as small eyes or deep eye sockets 2. No corneal flap incision 3. Suitable for those with occupational restrictions, such as pilot exams, military, police 4. Suitable for patients with thin corneas 5. Suitable for patients with a history of easy corneal abrasion |
1. Gentle treatment on the eye using Femtosecond Laser instead of a blade 2. Reduces side effects from corneal flap creation 3. More precise corneal flap creation than traditional LASIK (blade LASIK) 4. Can treat congenital myopia, hyperopia, astigmatism, and presbyopia |
1. Uses laser for all steps in one device, no blade 2. Corneal curvature after treatment closely resembles natural shape due to no flap creation 3. Highly accurate vision correction 4. Cornea remains strong due to small 2-4 mm incision, reducing risk of flap displacement 5. Lower risk of side effects (e.g., dry eyes, glare in dark, reduced clarity in low light) compared to other laser treatments due to no flap creation 6. Short recovery time, quick return to normal vision 7. Less eye irritation than other methods |
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The ophthalmologist will evaluate which treatment method—Femto-LASIK, PRK, or TransPRK—is suitable for the patient to ensure safety and the best results.
