Trans-PRK (Transepithelial Photorefractive Keratectomy) is a type of surface ablation refractive surgery used to correct vision problems such as myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. It’s a no-touch, blade-free, and flap-free procedure, making it an alternative to LASIK and standard PRK.
Trans PRK
- Epithelial removal: Instead of manually or mechanically removing the thin outer layer of the cornea (the epithelium), Trans-PRK uses an excimer laser to remove it in a single step—hence the term “transepithelial”.
- Corneal reshaping: Once the epithelium is removed, the same laser reshapes the underlying corneal tissue to correct the refractive error.
- Healing: A bandage contact lens is placed to protect the eye while the epithelium naturally regenerates over several days.
- Single-step, no-touch technique, reducing mechanical trauma.
- No flap creation (unlike LASIK), which avoids flap-related complications
- Smaller wound area.
- Lower risk of corneal ectasia compared to LASIK.
- Can be more comfortable than conventional PRK, with potentially faster re-epithelialization.
- Suitable for patients with thin corneas, dry eye, or those involved in contact sports.
- Significantly less expensive than LASIK/SMILE, due to fewer hardware costs.
- Slightly more postoperative discomfort compared to LASIK.
- Slightly visual recovery than LASIK (usually one week).
- Use of a bandage contact lens for a few days.
- Risk of haze in some cases, especially in high corrections (mitigated with Mitomycin-C).
Ideal Candidates:
- Patients with thin corneas, irregular corneas, or those not suitable for LASIK.
- Individuals with active lifestyles or risk of eye trauma.
- Patients seeking a flap-free, minimally invasive option.
