LASIK or SMILE: how to choose?
Published June 25, 2026
If you want to be free of glasses, two laser techniques often come up: LASIK and SMILE. Both use a laser to correct myopia, hyperopia and astigmatism, and both offer a quick recovery. So the real question is not “which one is best?” — they are two complementary techniques — but “which one best suits my eye and my lifestyle?”.
In this article, I explain openly what sets these two procedures apart: what is done to the cornea, recovery, dry eye, return to sports and the corrections treated. The goal is not to have you choose on your own, but to give you useful benchmarks before a personalized assessment.
The short answer — in 30 seconds
LASIK creates a thin corneal flap before reshaping the cornea with a laser; SMILE removes a thin lenticule of tissue without creating a flap. LASIK usually delivers clear vision within 24 hours and covers a wide range of corrections; SMILE, being flap-free, is often chosen for people who play contact sports and patients prone to dry eye. Neither is superior: the right choice depends on your cornea and your lifestyle.
Flap or lenticule
LASIK: corneal flap, then laser reshaping. SMILE: removal of a lenticule through a 3 mm micro-incision, with no flap.
24 h vs 24–48 h
Vision is usually clear within 24 h after LASIK, and within 24 to 48 h after SMILE. The difference is modest.
Nerves preserved
SMILE better preserves the corneal nerves, with less dryness in the short term; the gap narrows after 6 months.
Back to contact sports
With no flap, SMILE often allows a return to contact sports after 2 weeks, versus 4 weeks after LASIK.
Two different procedures on the same cornea
LASIK: corneal flap and reshaping
LASIK — short for Laser-Assisted In Situ Keratomileusis — is performed in three steps. First, I create a thin corneal flap with a femtosecond laser; I then reshape the underlying tissue with an excimer laser to precisely correct your refractive error; finally, I reposition the flap, which adheres naturally without stitches. Everything is done by laser, with no mechanical blade. The procedure takes about fifteen minutes for both eyes, under numbing eye drops only.
LASIK is one of the most widely performed refractive surgeries in the world, with more than 35 years of clinical follow-up — the first LASIK procedure in humans was performed in 1990. Vision is usually clear as early as the next day.
SMILE: lenticule extraction, with no flap
SMILE — short for Small Incision Lenticule Extraction — is a refractive surgery performed entirely with a femtosecond laser, without creating a corneal flap. The laser cuts a thin lenticule of tissue inside the cornea itself, which I then remove through a 3 mm micro-incision. The procedure also takes about 15 minutes for both eyes, under anesthetic eye drops.
It is a minimally invasive technique: preserving the anterior corneal layers and the corneal nerves is an interesting theoretical biomechanical argument for people who play contact sports. SMILE is more recent than LASIK, with about 19 years of follow-up (first human procedures in 2007).
LASIK and SMILE at a glance
Here is a summary comparison of the two laser techniques. It gives you a sense of direction — but the final decision always rests on your personalized assessment, which alone takes your cornea into account.
| LASIK | SMILE | |
|---|---|---|
| What is done to the cornea | Flap + reshaping | Lenticule extraction (no flap) |
| Visual recovery | 24 h | 24–48 h |
| Myopia up to | −10 D | −10 D |
| Hyperopia up to | +5 D | +5 D |
| Astigmatism | Yes | Yes |
| Short-term dryness | Temporary, a few weeks to a few months | Nerves preserved, less in the short term |
| Contact sports | After 4 weeks | After 2 weeks |
| Enhancement, if needed | Technically simpler | Technically more complex |
| Clinical follow-up | More than 35 years (since 1990) | About 19 years (since 2007) |
| Anesthesia | Eye drops | Eye drops |
| Reversible | No | No |
If your cornea is thin or your prescription is high, other techniques such as PRK / Trans-PRK or an ICL phakic lens may be more suitable — we discuss this at your assessment.
Which profile? Useful benchmarks
These are general trends, never absolute rules. Your cornea, your prescription and your activities are assessed together at your consultation.
LASIK may suit you if…
- You want one of the fastest visual recoveries, often by the next day
- You have hyperopia to correct (up to +5 D)
- You prefer a technique with extensive clinical follow-up
- Your cornea is regular and thick enough
- You have no activity that frequently exposes you to blows to the eye
SMILE may suit you if…
- You play a contact sport (boxing, judo, martial arts) — there is no flap to protect
- You are prone to mild dry eye, often better tolerated than after LASIK
- You are nearsighted or astigmatic and want a minimally invasive technique
- You prefer a procedure that does not create a corneal flap
- Your cornea is regular and thick enough
Still undecided, or wondering whether you are a candidate for surgery? I invite you to read my article “Am I eligible for refractive surgery?”, which details the criteria I examine before any procedure.
How I choose with you
No reliable answer can be given without tests. It is the assessment, not a preference in principle, that determines the technique best suited to your eye.
The pre-operative assessment
During the consultation, I carry out a comprehensive assessment: precise measurement of your prescription, corneal mapping, measurement of corneal thickness and examination of the anterior segment. I also assess the ocular surface, as it can guide the choice between the two techniques. This examination allows me to detect any corneal weakness, such as early keratoconus, which would rule out laser surgery.
A shared decision
Based on these objective data, I recommend the most suitable technique — LASIK, SMILE, or sometimes another option such as PRK or an ICL phakic lens. I explain why, and we decide together, taking your lifestyle into account. To explore all the available techniques, see the Refractive surgery page.
Your questions about LASIK and SMILE
Yes. LASIK has more than 35 years of clinical follow-up, as the first LASIK procedure in humans was performed in 1990. SMILE is more recent, with about 19 years of follow-up (first human procedures in 2007). Both techniques are now widely used and their long-term results are comparable. The choice depends on your profile, not on how long the technique has been around.
Visual recovery is usually achieved within 24 hours after LASIK, and within 24 to 48 hours after SMILE. The difference is modest, and vision keeps sharpening over a few days in both cases. Full stabilization generally takes 3 to 6 months.
SMILE does not create a corneal flap, which is an interesting theoretical biomechanical argument for contact sports. Contact sports can usually be resumed after 2 weeks with SMILE, versus 4 weeks after LASIK, allowing a healing period suited to your eyes. This is one of the factors we assess together during your assessment.
SMILE better preserves the corneal nerves, which may be associated with less postoperative dryness in the short term. This difference tends to fade after 6 months. After LASIK, temporary dryness is common for a few weeks to a few months. In both cases, I assess the ocular surface before surgery.
Both techniques correct myopia up to −10 diopters, as well as astigmatism. For hyperopia, both LASIK and SMILE correct up to +5 diopters. The amount of your correction is one of the criteria guiding the choice, but the final decision always rests on a comprehensive assessment.
Refractive surgery is not covered by French national health insurance (Assurance Maladie), whether for LASIK or SMILE. However, many complementary health insurance plans (mutuelles) offer a partial allowance — check with yours. A detailed quote is given to you at your assessment.
Find the technique that suits you
The only way to know whether LASIK, SMILE or another technique is right for you is a personalized assessment. I see patients at Cabinet OPHTALIFE, in Boulogne-Billancourt, next to Paris, to examine your eyes and recommend, with full transparency, the solution best suited to your eye and your lifestyle.
Related pages
Scientific references
This article is based on international guidelines and key publications. Sources can be verified via their DOI or PubMed.
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1
American Academy of Ophthalmology. Preferred Practice Pattern (PPP) — Refractive Errors & Refractive Surgery. aao.org
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2
Mechai N, Hage A, Baudouin C. Correction des erreurs réfractives par chirurgie cornéenne soustractive : histoire et perspectives. J Fr Ophtalmol. 2026;49(4):104829.
The content of this website is for information purposes only and is not a substitute for a medical consultation. Any treatment decision should be made together with your ophthalmologist.