SMILE (Small Incision Lenticule Extraction) represents the next generation of laser vision correction - a completely flapless procedure that corrects myopia and astigmatism through a single small incision, with no flap creation and minimal disruption to the corneal surface.
Dr Naren Shetty at Narayana Nethralaya, Bangalore, is an experienced SMILE surgeon who has performed this procedure for patients ranging from athletes to those with high prescriptions unsuitable for LASIK.
How Does SMILE Surgery Work?
SMILE Step-by-Step:
- A femtosecond laser creates a small disc of corneal tissue (lenticule) inside the cornea
- A 2–4mm incision is made on the corneal surface
- The lenticule is gently extracted through the incision
- The cornea reshapes - no flap is created at any point
The entire procedure takes approximately 25–30 minutes for both eyes. Since no flap is created, there is no risk of flap dislodgement - making SMILE particularly suitable for patients who play contact sports or have physically active lifestyles.
SMILE vs LASIK -Side-by-Side Comparison
| Feature | SMILE | LASIK |
|---|---|---|
| Corneal flap | ❌ No flap | ✅ Flap created |
| Incision size | 2–4 mm (tiny) | 18–20 mm arc |
| Dry eye risk | Very low | Moderate (temporary) |
| Contact sport safety | ✅ Excellent | Caution needed |
| Myopia correction | Up to -10D | Up to -10D |
| Hyperopia correction | ❌ Not suitable | ✅ Up to +4D |
| Visual recovery | 2–5 days | 24–48 hours |
| Cost (per eye) | ₹55,000–₹85,000 | ₹40,000–₹75,000 |
Who Is a Good Candidate for SMILE?
Frequently Asked Questions About SMILE Surgery
What is SMILE eye surgery?+
SMILE is a flapless laser procedure that removes a small disc of corneal tissue through a 2–4mm incision, correcting myopia and astigmatism without creating a corneal flap like LASIK.
Is SMILE surgery painful?+
No. Anaesthetic drops ensure the procedure is painless. Mild discomfort may occur for 24–48 hours after surgery.
How soon can I return to work after SMILE?+
Most patients return to desk work within 2–3 days. Physical activity and swimming are typically permitted after 2–4 weeks.
Can SMILE correct hyperopia?+
Currently SMILE is approved for myopia and myopic astigmatism. For hyperopia, LASIK or Contoura Vision is recommended.
What is SMILE Pro?+
SMILE Pro is the latest generation of SMILE surgery using the Visumax 800 platform, offering faster treatment time (under 10 seconds per eye) and even greater precision than standard SMILE.