What is SMILE LASIK?
Patients walk into refractive consultations and ask for “SMILE LASIK” all the time. Strictly speaking, the phrase mashes together two different procedures: SMILE (Small Incision Lenticule Extraction) and LASIK. Both are laser vision correction. Both reshape the cornea to fix short-sightedness, long-sightedness, or astigmatism. But they are not the same operation.
LASIK creates a corneal flap and uses an excimer laser to reshape the stroma underneath it. SMILE skips the flap entirely; it uses a femtosecond laser to carve a thin disc of tissue (a lenticule) inside the cornea, which is then extracted through a small side incision. The popular term “SMILE LASIK” is really shorthand for “the flapless lenticule extraction procedure that sits within the broader family of laser vision correction.”
At Vasan Eye Care, patients asking about SMILE LASIK are counselled carefully about the distinction, so the choice between SMILE and traditional LASIK matches their eye, their prescription, and their lifestyle. SMILE is offered as the primary lenticule-based option using the Zeiss VisuMax femtosecond laser platform.
Awareness of SMILE has grown steadily in India, and the procedure is now available in leading refractive centres across major cities. Many patients search for “SMILE LASIK” because they associate the word LASIK with all forms of laser vision correction. In the clinic, the right recommendation is rarely about brand names. It depends on the individual’s refraction, corneal thickness, topography, and lifestyle.
Indian refractive surgeons follow established protocols for SMILE: detailed pre-operative imaging, careful candidacy assessment, and structured post-operative care. Approved treatment ranges typically cover myopia up to around -10 dioptres and astigmatism up to -5 dioptres. Anything outside those ranges, or corneas that fail the topographic screen, are not candidates, regardless of how much the patient wants the procedure.
Types of Lenticule Extraction and Related Procedures
“SMILE LASIK” as a phrase often covers SMILE and its related lenticule extraction relatives. The landscape today:
| Procedure | Platform | Type | Indication |
|---|---|---|---|
| SMILE | Zeiss VisuMax | Flapless lenticule extraction | Myopia, myopic astigmatism |
| SMILE Pro | Zeiss VisuMax 800 | Faster lenticule extraction | Myopia, myopic astigmatism |
| Femto LASIK | Various femtosecond + excimer lasers | Flap-based LASIK | Myopia, hyperopia, astigmatism |
| Contoura LASIK | Wavelight EX500 | Topography-guided flap-based LASIK | Customised correction |
SMILE LASIK: How the Procedure Works?
In SMILE, the femtosecond laser does all the work. Low-energy, precisely focused pulses create a thin lenticule within the cornea, along with a small side incision of two to four millimetres. The lenticule represents exactly the amount of tissue that needs to be removed to correct the refractive error. The surgeon then extracts it in one piece through the side incision using a fine dissector.
Removing the lenticule changes the curvature of the cornea. Vision sharpens. No flap is lifted. No excimer laser ablates tissue. That flapless design preserves more of the cornea’s natural biomechanical structure and leaves more of the corneal nerves undisturbed. For patients worried about dry eye, or active in sports, that difference matters.
When Is SMILE LASIK Indicated?
Patients considering SMILE or other laser vision correction typically have stable refraction and find glasses or contact lenses inconvenient. SMILE is particularly well suited for:
- Myopia and myopic astigmatism within approved ranges
- Dry eye tendencies, where the flapless design helps
- Active lifestyles involving contact sports, martial arts, or combat training
- Occupations where a corneal flap would pose long-term risk: defence services, police duty, industrial work with flying debris
- Patients who simply prefer a flapless approach for peace of mind
Patients with hyperopia, high irregular astigmatism, keratoconus, or excessively thin corneas are usually advised to consider other options. SMILE is not a universal substitute for LASIK.
SMILE LASIK: Step-by-Step Procedure
- Detailed refractive workup: refraction, topography, tomography, pachymetry, tear film assessment.
- Surgeons determine whether SMILE, LASIK, or an alternative technique is the best fit.
- If SMILE is chosen, the treatment plan is programmed into the femtosecond laser.
- On the day of surgery: topical anaesthetic drops instilled, patient docked under the laser.
- A femtosecond laser creates the lenticule and side incision in about 20 to 30 seconds per eye.
- The surgeon separates and extracts the lenticule through the incision.
- Cornea irrigated; antibiotic drops applied.
- The patient rests briefly and is discharged the same day.
- Review visits scheduled at day one, one week, one month, and three months.
How Much Does a SMILE LASIK Cost in India?
| Procedure | Indicative Cost Both Eyes (INR) | Typical Inclusions |
|---|---|---|
| SMILE | 1,00,000 to 1,60,000 | Pre-op workup, surgery, medications, follow-ups |
| SMILE Pro | 1,20,000 to 1,90,000 | Newer platform, complete package |
| Standard LASIK | 50,000 to 90,000 | Flap-based laser correction |
| Femto LASIK | 80,000 to 1,30,000 | Bladeless flap LASIK |
Final quotations are provided after evaluation.
Post-Surgery Care and Recovery
What to Expect After SMILE LASIK?
Vision usually improves within 24 hours, with further clarity over the first week. Mild discomfort, watering, and sensitivity to light settle within a few days. Dry eye symptoms, when they occur, tend to be milder and shorter-lived than with flap-based LASIK, given the smaller incision and flapless design. Some patients report no dry eye at all. Others notice it for a few weeks and then it fades.
Post-Operative Care Tips
- Use prescribed antibiotics and lubricating drops on schedule.
- Do not rub the eyes.
- Avoid direct water contact with the eye for at least one week.
- No swimming or saunas for four weeks.
- Delay eye make-up for two weeks.
- Screen work can resume in a few days with frequent breaks and lubricant drops.
- Avoid dusty environments and contact sports for four weeks.
- Attend follow-ups to monitor healing, IOP, and refractive stability.
References
- American Academy of Ophthalmology. Refractive Surgery Overview.
- Sekundo W et al. Small Incision Lenticule Extraction: Clinical Outcomes.
- Zeiss Meditec. VisuMax Platform Technical Documentation.
- All India Ophthalmological Society. Refractive Surgery Guidelines.
- Indian Journal of Ophthalmology. Comparative Outcomes of SMILE and LASIK in Indian Eyes.
Frequently Asked Questions
No. SMILE is flapless lenticule extraction. LASIK involves a corneal flap and excimer laser ablation. Many patients use “SMILE LASIK” loosely to refer to SMILE under the general umbrella of laser vision correction. The distinction matters because the eligibility criteria, recovery profiles, and trade-offs are different.
Both deliver excellent outcomes for the right candidates. SMILE has biomechanical and nerve-sparing advantages, which matter for active lifestyles and dry eye tendencies. LASIK, especially topography-guided variants like Contoura, may be preferred in certain cases, particularly where hyperopia is involved or where specific corneal aberrations need correcting. Neither is universally “better.” The right one is the one that fits your eye.
SMILE is an established refractive procedure with a well-documented safety profile when performed in suitable candidates by trained surgeons. The technology has been in use for over a decade with millions of procedures worldwide.
The laser portion takes around 20 to 30 seconds per eye. The full visit typically lasts about an hour, including preparation and observation.
The procedure itself is painless; topical anaesthesia takes care of that. Mild grittiness and watering are common for a day or two afterwards and settle with drops.
Most patients have functional vision within 24 hours and continue to improve over one to three weeks. The sharpness at day one is already enough to read a clock and navigate, which surprises some people.
Office work is usually possible within two to three days. Jobs involving heavy dust or physical activity may need a longer break.
Current SMILE protocols are primarily approved for myopia and myopic astigmatism. Hyperopia is typically addressed with other refractive techniques such as LASIK, where the treatment profile and safety data for hyperopic correction are well established.
Yes. The refractive correction is permanent. Age-related changes such as presbyopia and cataract can still develop later in life, but these are separate events unrelated to the SMILE surgery.
Mild dry eye is usually acceptable, and SMILE is often the preferred option for such patients specifically because it disturbs fewer corneal nerves than LASIK. Moderate to severe dry eye needs evaluation and treatment before surgery, regardless of which technique is planned.
References
* American Academy of Ophthalmology. Refractive Surgery Overview.
* Sekundo W et al. Small Incision Lenticule Extraction: Clinical Outcomes.
* Zeiss Meditec. VisuMax Platform Technical Documentation.
* All India Ophthalmological Society. Refractive Surgery Guidelines.
* Indian Journal of Ophthalmology. Comparative Outcomes of SMILE and LASIK in Indian Eyes.
