ReLEx SMILE eye surgery is a modern, flapless laser vision correction procedure designed to treat myopia and astigmatism with minimal corneal disruption. Known as the third-generation laser vision correction after PRK and LASIK, small-incision lenticule extraction (SMILE) is a minimally invasive eye surgery option with faster recovery and fewer surface-related side effects. ReLEx SMILE laser eye surgery is increasingly preferred by patients seeking stable vision correction without the risks linked to corneal flap creation.
What Is ReLEx SMILE Eye Surgery?
To understand what ReLEx SMILE eye surgery is, it helps to break down the name. SMILE stands for Small Incision Lenticule Extraction. The procedure uses the VisuMax femtosecond laser to create a thin disc of tissue, known as a lenticule, within the cornea. This lenticule is removed through a very small opening, reshaping the cornea and correcting vision.
Unlike LASIK, the ReLEx SMILE procedure is fully flap-free and computer-controlled. It is a bladeless eye surgery technique with no corneal flap, reducing mechanical stress on the eye.
How ReLEx SMILE Surgery Works: Step-by-Step Procedure
Preparation and Anaesthesia
Before surgery, anaesthetic eye drops are applied to numb the eye completely. This ensures the treatment is painless and comfortable. Patients remain awake and experience no pain thanks to these topical anaesthetic drops, making SMILE a painless eye surgery experience.
Laser Creation of the Lenticule
The VisuMax system delivers precise laser pulses to create a lenticule within the corneal tissue. These pulses form tiny bubbles that precisely outline the required shape for vision correction. This stage relies on advanced femtosecond laser technology for accuracy.
Removal of the Lenticule and Corneal Reshaping
A small keyhole incision of around 2-4 mm is created. The surgeon gently performs lenticule extraction, reshaping the cornea to correct refractive error. The entire quick laser procedure for both eyes usually takes under 15 minutes.
Advantages of ReLEx SMILE Eye Surgery
Bladeless and Flapless Treatment
ReLEx SMILE eye surgery avoids creating a corneal flap, eliminating flap-related risks. The procedure is bladeless, noiseless, and odourless, contributing to a calm, comfortable patient experience and improved overall comfort.
Rapid Recovery and Less Dry Eye
Many patients report surprise at how fast the procedure feels. Vision often improves within hours, with further clarity over weeks. Because the incision is self-sealing, fewer corneal nerves are disrupted, resulting in reduced dry eye symptoms, faster recovery, and minimal downtime.
Enhanced Corneal Stability and Safety
SMILE preserves more corneal tissue, supporting better corneal stability. This makes it suitable for patients with thin corneas or high prescriptions. It combines the biomechanical strength of surface procedures with the comfort of LASIK, providing safe refractive surgery for high myopia and astigmatism.
Who Is an Ideal Candidate for ReLEx SMILE?
Candidates for SMILE are generally adults aged 18 or older with stable vision for at least 1 year. The procedure is approved for myopia from −0.5 D to −10 D and astigmatism up to −5 D.
It is suitable for people with thin corneas, mild dry eyes, or contact lens intolerance.
People who are athletes with an active lifestyle, or those in occupations where eye trauma risk is higher, often prefer SMILE due to the absence of a flap. Final SMILE candidacy depends on detailed eligibility criteria assessed by an ophthalmologist.
ReLEx SMILE vs. Other Laser Eye Surgery Options
SMILE vs. LASIK
In ReLEx SMILE vs LASIK, LASIK involves creating a corneal flap, while SMILE uses a tiny incision. Both are FDA-approved with excellent outcomes.
LASIK treats hyperopia, myopia, and astigmatism, whereas SMILE currently treats only myopia and astigmatism. Differences include recovery profile, dry eye risk, and cost, making this laser eye surgery comparison important for informed decisions.
SMILE vs. PRK/LASEK (Surface Ablation)
PRK and LASEK remove the corneal surface layer, which can cause greater discomfort and slower healing. In SMILE vs PRK, SMILE preserves the surface, leading to faster visual recovery and less pain than surface ablation or LASEK.
Risks and Potential Side Effects
Common Side Effects
Short-term side effects of SMILE eye surgery may include temporary blurriness, mild inflammation, glare, halos, or light sensitivity. These usually settle within days to weeks as healing progresses.
Rare Complications
Serious complications are uncommon. Because there is no flap, flap-related issues do not occur. Following safety protocols, attending follow-ups, and adhering to post-operative instructions significantly reduce the risk of rare complications and improve long-term safety.
Cost of ReLEx SMILE Eye Surgery in India
ReLEx SMILE eye surgery cost in India generally ranges from ₹80,000 to ₹1.5 lakh per eye, depending on the city, clinic, and technology used. The cost of SMILE eye surgery in India varies based on the surgeon’s expertise, the clinic’s reputation, and whether pre- and post-operative care is included. Patients should confirm transparency about the ReLEx SMILE price and evaluate value rather than focusing solely on affordable laser eye surgery.
Recovery Timeline and Aftercare Tips
Day by Day Recovery
Vision is present immediately after surgery, but may feel hazy initially. Most people return to work within a few days.
Strenuous exercise or swimming is usually safe after about one week. This outlines typical SMILE eye surgery recovery time and post-operative care expectations.
Long-Term Results and Follow-Up Visits
Vision stabilises over several weeks. Follow-up visits typically occur at 24-48 hours, one week, three months, and one year. Long-term post-surgery eye care, adherence to drops, and avoiding eye rubbing support stable long-term results.
Preparing for Your ReLEx SMILE Surgery
Pre Operative Guidelines
Patients must stop wearing contact lenses before surgery to allow corneal stabilisation. Pre-surgery tests include corneal thickness, ocular health, and refractive stability assessments. This pre-SMILE preparation ensures accurate planning and safety.
What to Expect on Surgery Day
The visit includes final measurements, anaesthetic drops, the procedure, and a brief rest period. Bringing sunglasses and arranging transport home is recommended due to light sensitivity after treatment.
Conclusion: Is ReLEx SMILE Eye Surgery Right for You?
ReLEx SMILE eye surgery offers a modern, minimally invasive alternative to LASIK, especially for patients with thin corneas, high myopia, or active lifestyles. With fast recovery and excellent safety, it represents advanced refractive care. A personalised consultation with an experienced ophthalmologist is essential to decide if SMILE is right for you and to ensure comprehensive, individualised eye care.
