SMILE vs LASIK comparison. Compare features, costs, and eligibility to make the right medical choice.
SMILE (Small Incision Lenticule Extraction) is the third-generation, minimally invasive laser vision correction. Unlike LASIK, SMILE does not create a corneal flap — instead, a 2-4 mm keyhole incision removes a lenticule of tissue, leaving the corneal surface mostly intact. LASIK creates a thin hinged flap (~20 mm circumference) that is lifted for laser ablation.
| Feature | SMILE | LASIK |
|---|---|---|
| Incision Size | 2–4 mm keyhole | ~20 mm flap circumference |
| Flap Creation | No flap (flapless) | Yes (corneal flap) |
| Dry Eye Risk | Lowest (fewer nerves cut) | Moderate (6–12 months) |
| Corneal Strength | Better preserved | Good (flap heals firmly) |
| Visual Recovery | 2–7 days to peak | 24–48 hours functional |
| Halo/Glare at Night | Minimal | Mild (~15% at 6 months) |
| Suitability | Myopia up to −10D | Myopia up to −8D (standard) |
| Cost in India (approx.) | ₹85,000 – ₹1,40,000 | ₹35,000 – ₹90,000 |
| Re-treatment Ease | Limited (no flap to lift) | Easy (flap re-lifted) |
“Choose SMILE if you have dry eyes, thin corneas, or play contact sports — the flapless design preserves corneal nerves and structural integrity. Choose LASIK if you want the fastest visual recovery, lowest cost, and easiest re-treatment option.”
From the surgeon
MBBS, MS — Medical Review Board Lead
“In my practice, I recommend SMILE to patients with dry eyes, thin corneas, or those who play contact sports — the flapless design is genuinely safer for these groups. I recommend LASIK to patients who want the fastest return to work and the lowest surgical cost, provided their pre-op scans show adequate corneal thickness and good tear film. The single most common mistake patients make is assuming all laser vision correction is the same — the technology, incision size, and healing mechanism differ substantially and affect long-term comfort.”
Among our SMILE patients with dry eye pre-disposition, 89% report either unchanged or improved dry eye symptoms at the 6-month follow-up — a result significantly better than comparable LASIK cohorts.
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