No-Touch Laser (TransPRK / PRK)
Surface ablation laser treatment applied from the corneal surface without contact
No-Touch Laser, medically known as TransPRK/PRK, is a surface ablation laser treatment applied to the cornea without any mechanical contact. Since no flap is created, it is considered a safe option for patients whose corneal biomechanics need to be preserved. It is frequently preferred in cases of thin corneas, those with significant dry eye complaints, and occupational groups with a high risk of trauma.
Who is it Suitable For?
- Patients whose corneal thickness is insufficient for LASIK
- Individuals with dry eye complaints
- Occupational groups with a high probability of exposure to trauma, such as athletes, military personnel, police
- Patients with low to moderate myopia, astigmatism, or hyperopia
- Selected cases with irregular corneal surface
Detailed examination of corneal topography, pachymetry, and tear film functions is required for suitability assessment.
Stages of the Procedure
1. Local anesthetic drops
The eye surface is numbed with drops. The patient does not feel any pain during the procedure.
2. Removal of epithelial tissue from the surface
The epithelium, the outermost layer of the cornea, is removed from the surface with the help of a laser. There is no mechanical contact in this procedure; the method gets its name from this.
3. Excimer laser application
The corneal surface is reshaped according to the refractive error. The laser duration is usually limited to seconds.
4. Bandage contact lens application
A bandage lens is placed after treatment to protect the cornea and reduce the sensation of stinging while the epithelium heals.
5. Healing process
The epithelial layer regenerates within 3–5 days. During this period, stinging, tearing, and light sensitivity may occur. Visual acuity gradually improves and stabilizes within a few weeks.
Advantages
- No flap is created; the corneal anatomy is preserved in its natural state.
- Safe in patients with trauma risk due to contactless application.
- Provides an alternative to LASIK in thin corneas.
- Dry eye complaints increase less compared to LASIK.
Limitations
- Stinging, burning, and discomfort may occur in the first days.
- Visual recovery is slower compared to LASIK and SMILE.
- Requires a bandage contact lens and several days of rest.
No-Touch Laser is a reliable and cornea biomechanics-respecting laser treatment method with proven long-term results in suitable patient groups.