What Is No-Touch Laser (TransPRK)? How Is It Different from PRK?
A Modern Approach to No-Touch Laser Eye Surgery
No-Touch Laser is an advanced surface laser treatment in which the epithelium, the outermost layer of the cornea, is removed entirely with an excimer laser, without mechanical contact or the use of alcohol. This technique is also known as TransPRK (Transepithelial Photorefractive Keratectomy).
Unlike LASIK, no corneal flap is created. The treatment is performed directly on the surface of the cornea. For this reason, it may be a suitable option for certain patients in whom creating a corneal flap is not preferred.
How Is No-Touch Laser (TransPRK) Performed?
The procedure is performed under topical anesthesia using anesthetic eye drops.
In the first stage, the excimer laser removes the corneal epithelium in a controlled manner. During the same session, the laser treatment continues to reshape the cornea according to the patient’s refractive error.
At the end of the procedure, a protective contact lens is placed on the eye, and the epithelium is allowed to regenerate naturally.
What Is the Difference Between PRK and No-Touch Laser (TransPRK)?
Both techniques are surface laser treatments with the same basic goal: to reshape the cornea and correct myopia, hyperopia, and astigmatism.
The main difference is how the epithelial layer is removed.
| PRK | No-Touch Laser (TransPRK) |
|---|---|
| The epithelium is removed mechanically by the surgeon. | The epithelium is removed entirely with the excimer laser. |
| Mechanical contact with the cornea is involved. | Mechanical contact is minimized. |
| Alcohol or mechanical techniques may be used. | Alcohol is not used. |
| A conventional surface laser technique that has been used for many years. | A more modern approach to surface laser treatment. |
The long-term visual outcomes of both methods are generally similar. The choice of technique depends on the patient’s corneal structure, the laser system being used, and the surgeon’s experience.
What Are the Advantages of No-Touch Laser?
In appropriately selected patients, No-Touch Laser may offer several advantages:
- Minimal mechanical contact with the cornea
- No use of alcohol
- No corneal flap
- May be an option for selected patients with relatively thin corneas
- A surface-based treatment that preserves corneal integrity without creating a flap
These advantages may not apply equally to every patient. The treatment should always be planned individually.
Who Is a Suitable Candidate?
No-Touch Laser may be considered for:
- Suitable candidates with relatively thin corneas
- Patients for whom flap creation is not preferred
- Patients whose eyes are suitable for surface laser treatment
- Certain athletes and people whose occupations involve a higher risk of corneal trauma
The most appropriate treatment can only be determined after a comprehensive eye examination.
What Is the Recovery Process Like?
During the first few days after No-Touch Laser treatment, patients may experience stinging, tearing, discomfort, and sensitivity to light. The corneal epithelium usually regenerates within several days.
Most patients can return to their normal daily activities relatively quickly. However, complete stabilization and clarity of vision may take longer than after LASIK.
Conclusion
No-Touch Laser (TransPRK) is a modern form of surface laser vision correction. Although it is based on the same fundamental principle as conventional PRK, the epithelial layer is removed entirely by laser, minimizing mechanical contact with the cornea.
The most appropriate laser eye treatment should be selected individually by considering the patient’s corneal structure, refractive error, lifestyle, and the findings of a comprehensive eye examination.
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