SMILE Pro vs PRK
PRK is a surface procedure: the outer epithelium is removed and the cornea is reshaped at the surface with an excimer laser, then the epithelium heals back over several days. SMILE Pro is flap-free and works inside the cornea, removing a lenticule through a small incision. PRK is a long-established option often chosen for thinner corneas or specific needs; SMILE Pro is valued for early comfort and being flap-free.
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Both avoid a flap — but differently
Neither PRK nor SMILE Pro creates a LASIK-style flap. PRK avoids a flap by treating the surface directly, accepting a few days of surface healing. SMILE Pro avoids a flap by working within the cornea and using only a small incision. That difference shapes the early recovery experience and which corneas each suits.
SMILE Pro vs PRK, side by side
| SMILE Pro | PRK / TransPRK (surface) | |
|---|---|---|
| Flap | Flap-free (small incision) | Flap-free (surface, no incision) |
| Where it works | Inside the cornea (intrastromal) | On the corneal surface |
| Early recovery | Often comfortable early | Surface heals over several days; can be sore early |
| Thin cornea | Depends on assessment | Often considered when tissue is limited |
| Corrects | Myopia & myopic astigmatism | Myopia, astigmatism (surface ablation) |
- You want quicker, more comfortable early recovery in the typical case.
- You have suitable corneal thickness confirmed at assessment.
- You prefer a flap-free intrastromal approach.
- Your cornea is thinner and your surgeon favours a surface procedure.
- You have a corneal or lifestyle factor that makes surface ablation more suitable.
- You want one of the longest-established refractive track records.
This comparison is general information, not a recommendation. The right procedure for your eyes is confirmed after an examination with a qualified refractive surgeon.
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SMILE Pro vs PRK — frequently asked questions
Is PRK safer than SMILE Pro?+
Both are established, well-studied procedures with good safety profiles in suitable candidates. 'Safer' depends on your eyes — PRK is often chosen for thinner corneas, while SMILE Pro suits many with adequate corneal thickness. Your surgeon's assessment determines the safest option for you.
Does PRK take longer to recover than SMILE Pro?+
Typically the early recovery after PRK is longer and can be less comfortable, because the corneal surface heals over several days. SMILE Pro is often comfortable earlier. Individual healing varies, and your surgeon will set expectations for your case.
Medically reviewed by the LasikInPune senior refractive surgery panel. Last updated: May 2026.
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