ReLEx SMILE

Considering ReLEx SMILE for Clearer Vision

For many people with nearsightedness or astigmatism, daily life is shaped by glasses and contact lenses. They may work well, but they can also be inconvenient, uncomfortable or limiting during travel, sports, long workdays or dry environments. If you are researching laser vision correction, you may be asking practical questions: Is the procedure safe for my eyes? Will it hurt? How long will recovery take? What if I am not a candidate for LASIK? And if you are considering treatment abroad, you may also want to know how your care will be coordinated before, during and after your visit.

ReLEx SMILE is one of the modern options for laser vision correction in eligible patients with myopia, with or without astigmatism. It is designed to reshape the cornea through a very small incision, without creating a corneal flap. For suitable candidates, this can mean a comfortable procedure, a relatively quick return to many routine activities and reduced dependence on glasses or contact lenses.

Choosing vision correction is still a medical decision, not simply a lifestyle purchase. The cornea, tear film, prescription stability, pupil size, eye pressure, retinal health and personal visual goals all matter. A careful preoperative evaluation helps determine whether ReLEx SMILE is appropriate, whether another procedure may be safer or more effective, or whether laser vision correction should be avoided. At Acibadem, this decision is made through a structured ophthalmology assessment, supported by modern diagnostic imaging and an individualized discussion of benefits, limitations and realistic expectations.

What Is ReLEx SMILE?

ReLEx SMILE, often referred to simply as SMILE, stands for Small Incision Lenticule Extraction. It is a minimally invasive laser vision correction procedure used to treat eligible degrees of myopia and myopic astigmatism. Unlike LASIK, which involves creating a thin corneal flap, SMILE uses a femtosecond laser to create a very thin, lens-shaped layer of tissue inside the cornea. This layer is called a lenticule. The surgeon then removes the lenticule through a small incision, changing the shape of the cornea so that light focuses more accurately on the retina.

The cornea is the clear front surface of the eye and contributes significantly to the eye’s focusing power. In myopia, the eye focuses light in front of the retina, causing distant objects to appear blurry. Astigmatism occurs when the cornea or lens has an irregular curvature, causing blurred or distorted vision at multiple distances. By removing a precisely calculated amount of corneal tissue from within the cornea, SMILE reduces the focusing error and can improve unaided distance vision.

Because SMILE is flapless, it preserves the surface architecture of the cornea in a different way than flap-based procedures. The small incision is typically only a few millimeters, and no corneal flap needs to be lifted and repositioned. This may be especially relevant for patients whose lifestyle or work involves physical activity, or for those who are concerned about flap-related issues. However, flapless does not mean risk-free. The procedure still requires detailed eligibility testing, careful surgical technique and appropriate follow-up.

SMILE is not designed to treat every refractive error. It is most commonly used for nearsightedness and selected astigmatism patterns within approved and clinically appropriate ranges. Patients with farsightedness, presbyopia, certain corneal abnormalities or unstable prescriptions may need a different approach. The most suitable option can only be determined after a full eye examination.

Who May Need ReLEx SMILE?

ReLEx SMILE may be considered by adults who want to reduce their dependence on glasses or contact lenses and who meet specific eye health and prescription criteria. Many candidates have worn glasses or contact lenses for years and are seeking more visual freedom for professional, personal or athletic reasons. Others may have contact lens intolerance due to dryness, irritation or recurrent discomfort.

Typical symptoms that lead patients to consider SMILE include blurred distance vision without glasses, difficulty recognizing faces or signs at a distance, dependence on prescription lenses for driving, and visual inconvenience during sports, swimming or travel. Patients with astigmatism may also notice shadowing, distortion, eye strain or reduced clarity even when objects are not very far away.

A strong candidate profile usually includes a stable prescription, healthy corneas, adequate corneal thickness and no active eye disease that would interfere with healing or visual quality. Age, occupation, hobbies, night-driving needs and expectations also influence the decision. For example, a patient who works long hours on screens may need careful tear-film assessment, while a patient involved in contact sports may be particularly interested in a flapless procedure.

Diagnosis and candidacy assessment are based on a comprehensive ophthalmic evaluation, not only a glasses prescription. Testing may include refraction, corneal topography or tomography, corneal thickness measurement, tear-film evaluation, pupil assessment, eye pressure measurement and a dilated retinal examination when indicated. These tests help identify conditions such as keratoconus, irregular astigmatism, dry eye disease, cataract, glaucoma risk or retinal changes that may affect treatment planning.

Some patients who are interested in SMILE may discover that another option is more appropriate. LASIK, PRK, phakic intraocular lenses or lens-based procedures may be considered depending on age, prescription, corneal shape and overall eye health. A responsible refractive surgery consultation should include this comparison and should explain why a specific procedure is recommended or not recommended.

Conditions and Indications ReLEx SMILE Addresses

ReLEx SMILE is primarily used for myopia, commonly called nearsightedness. In myopia, close objects may be clear while distant objects appear blurry. This occurs when the eye is too long relative to its focusing power or when the cornea bends light too strongly. SMILE reduces the cornea’s focusing power by changing its internal shape, helping distant images focus closer to the retina.

SMILE can also address certain cases of myopic astigmatism. In these cases, the prescription includes both nearsightedness and an astigmatic component. The treatment plan is calculated to correct the spherical and cylindrical components of the refractive error as precisely as possible within safety parameters.

The procedure may be considered for patients who:

• Have stable myopia, with or without astigmatism, within a treatable range
• Want to reduce dependence on glasses or contact lenses
• Have adequate corneal thickness and a regular corneal shape
• Do not have active eye infection, uncontrolled dry eye or progressive corneal disease
• Have realistic expectations about outcomes, recovery and possible need for glasses in certain situations
• Understand that age-related near-vision changes, such as presbyopia, can still develop later in life

SMILE is generally not suitable for patients with untreated keratoconus or suspected corneal ectasia, significant corneal scarring, unstable refractive error, certain autoimmune or healing disorders, uncontrolled glaucoma, significant cataract, active ocular inflammation or pregnancy-related prescription changes. Contact lens users may need to stop wearing lenses for a period before evaluation so that the corneal surface returns to its natural shape and measurements are reliable.

How ReLEx SMILE Is Performed

Preparation Before the Procedure

The preparation begins with a detailed consultation and diagnostic testing. Your ophthalmologist reviews your prescription history, medical background, medications, prior eye conditions, contact lens habits and daily visual needs. The goal is to determine not only whether SMILE can be performed, but whether it is the most appropriate and safest option for you.

Advanced corneal imaging maps the shape and thickness of the cornea in detail. These measurements help detect subtle irregularities that may not be obvious during a standard eye exam. Tear-film assessment is also important, because untreated dry eye can affect both measurements and postoperative comfort. If dry eye or eyelid inflammation is present, treatment may be recommended before surgery.

Patients who wear soft contact lenses are usually asked to stop wearing them before the preoperative measurements. Rigid or specialty contact lenses may require a longer discontinuation period. Your care team will give instructions tailored to the type of lenses you use. On the day of surgery, patients are usually advised not to use eye makeup, perfume or facial creams near the eyes, and they should arrange transportation back to their hotel or home.

During the Procedure

ReLEx SMILE is typically performed as an outpatient procedure using topical anesthetic eye drops. You remain awake, but the eye is numbed, and most patients report pressure or awareness rather than pain. A device gently helps keep the eye open. The surgeon aligns the eye under the laser and confirms the treatment parameters.

A femtosecond laser creates the lenticule inside the cornea and forms a small incision at the corneal surface. The laser portion is brief. The surgeon then accesses the lenticule through the incision, carefully separates it from the surrounding tissue and removes it. Removing this precisely shaped tissue changes the corneal curvature according to the planned correction.

The technology used for SMILE relies on highly focused, ultrafast laser pulses that work within the corneal tissue without removing the outer surface layer in the same way as surface ablation procedures. Diagnostic imaging and planning software help guide treatment selection, while magnification and surgical visualization support accuracy during lenticule dissection and extraction. The emphasis is on precise measurement, patient selection and controlled tissue handling.

The procedure itself often takes a short time per eye, although your total time in the surgical area is longer because of preparation, verification and immediate postoperative checks. Both eyes may be treated on the same day when appropriate, but the decision depends on the surgeon’s assessment and patient-specific factors.

Immediately After Treatment

Vision is usually blurry or misty at first. This is expected. Some patients describe it as looking through fog or water. Mild burning, tearing, light sensitivity or a foreign-body sensation can occur during the first hours. Eye drops are prescribed to support healing and reduce inflammation or infection risk. Protective eyewear may be recommended, especially during sleep in the early period, to prevent rubbing.

You will receive instructions about eye drops, hygiene, screen use, showering, exercise, swimming, makeup and travel. Most patients can return to many routine activities within a few days, but recovery is individual. Vision often improves noticeably in the first days and continues to refine over the following weeks. Some fluctuation, glare, halos or dryness can occur during the healing period.

Follow-Up and Recovery Process

Follow-up visits allow the ophthalmology team to check healing, visual acuity, corneal clarity and comfort. For international patients, follow-up planning is especially important. The care team may coordinate the recommended schedule while you are in Turkey and provide medical documentation for your ophthalmologist at home if ongoing local monitoring is needed.

Patients are advised not to rub their eyes, especially during early healing. Swimming pools, saunas and environments with dust or contamination may need to be avoided temporarily. Screen work can usually resume gradually, but frequent blinking and lubricating drops may be recommended if dryness occurs. Driving should only resume when your surgeon confirms that your vision meets safe and legal requirements.

Although many patients notice functional visual improvement quickly, the final visual result may take longer to stabilize. Healing quality, dryness, prescription strength and individual corneal response can influence the speed of recovery. Your surgeon will explain what is typical for your eyes and what symptoms should prompt urgent contact.

Why Acting Early Matters

Laser vision correction is usually elective, so “early” does not mean rushing into surgery. It means seeking evaluation at the right time, before years of contact lens irritation, prescription uncertainty or undiagnosed corneal changes complicate decision-making. A thorough assessment can clarify whether you are a candidate now, whether treatment should be postponed or whether monitoring is safer.

For some patients, delaying evaluation may allow dry eye disease or contact lens-related inflammation to worsen. Chronic irritation can affect measurement accuracy and comfort after surgery. Treating these issues early may expand options and improve the reliability of planning. Similarly, identifying subtle corneal irregularity early can prevent an unsuitable procedure and guide safer management.

Age also matters. Younger patients need prescription stability before refractive surgery. Patients in their 40s and beyond should discuss presbyopia, the age-related loss of near focusing ability. SMILE may improve distance vision but does not prevent the future need for reading glasses. Early consultation helps patients understand timing and choose a strategy aligned with their stage of life.

The main risk of delay is not that SMILE becomes impossible for everyone, but that untreated conditions, unstable prescriptions or changing visual needs may narrow choices. A careful evaluation gives you information. It may lead to surgery, but it may also lead to observation, medical treatment for the ocular surface or a different vision correction plan.

Benefits of ReLEx SMILE

For eligible patients, ReLEx SMILE offers several practical and medical advantages that should be understood in the context of individual eye health and expectations.

Benefit	What It Means for You
Flapless laser correction	No corneal flap is created, which may reduce flap-related concerns and can be relevant for patients with active lifestyles or certain occupational needs.
Small incision approach	The corneal surface is disturbed through a limited opening, which may support comfort and a relatively quick return to routine activities for many patients.
Reduced dependence on glasses or contact lenses	Many suitable patients achieve improved unaided distance vision, making everyday activities such as travel, exercise and driving more convenient.
Precise corneal reshaping	The treatment is planned using detailed diagnostic measurements so that the internal corneal tissue removal matches the refractive error being treated.
Potential comfort for contact lens-intolerant patients	Patients who struggle with contact lens dryness or irritation may benefit from an alternative that reduces daily lens wear, if they are medically suitable.

Recovery Timeline After ReLEx SMILE

Recovery varies from person to person, but the following timeline describes what many patients can generally expect after SMILE when healing is uncomplicated.

Time Period	What Patients Can Expect
Day 1	Vision may be cloudy or hazy, with mild tearing, light sensitivity or foreign-body sensation. A postoperative check may be performed, and prescribed drops are started.
First Week	Vision often improves significantly, though fluctuations can occur. Many patients resume office work and daily activities with precautions against rubbing, contamination and eye strain.
First Month	Visual clarity usually continues to refine. Dryness, glare or halos may gradually improve. Follow-up visits assess healing and confirm activity guidance.
Longer Term	Vision tends to stabilize further. Some patients may still need glasses for specific tasks, night driving or future age-related near-vision changes, depending on their eyes and lifestyle.

What Influences a Good Result?

A good ReLEx SMILE outcome begins with appropriate patient selection. The most important factors include prescription stability, corneal thickness, corneal shape, tear-film quality, pupil characteristics and the absence of diseases that could impair healing or visual quality. Even an excellent procedure cannot compensate for an unsuitable cornea or unrealistic expectations.

The accuracy of preoperative measurements is also critical. Contact lenses can temporarily alter corneal shape, which is why patients may need to stop wearing them before testing. Dry eye, allergies or eyelid inflammation can also affect measurements and should be managed before surgery. High-quality diagnostics help the surgeon confirm that the cornea is regular, strong enough and appropriate for tissue removal.

The degree of myopia and astigmatism influences predictability. Lower and moderate prescriptions may behave differently from higher corrections. Patients with high refractive errors may still have a small residual prescription or may require glasses in certain circumstances. Enhancement options after SMILE can be more complex than after some other laser procedures, so the initial planning discussion should include how residual refractive error would be managed if it occurs.

Healing biology varies. Some patients experience temporary dryness, glare, halos or fluctuating vision. These symptoms often improve, but they require monitoring and sometimes treatment. Following postoperative instructions, using drops correctly and attending follow-up appointments all support recovery. Avoiding eye rubbing is particularly important, both for comfort and for corneal safety.

Expectations play a central role. SMILE is designed to reduce dependence on corrective lenses, especially for distance vision. It does not make the eye immune to future changes. Presbyopia can still develop with age. Cataracts, retinal disease or glaucoma can also affect vision later in life, independently of prior laser correction. A thoughtful consultation helps patients understand both the advantages and the boundaries of the procedure.

Surgeon experience and team coordination matter as well. Refractive surgery is a process that includes evaluation, planning, treatment, early recovery and long-term guidance. A good result depends on each step being performed carefully and on clear communication between the patient and clinical team.

Why International Patients Choose Acibadem for ReLEx SMILE

International patients considering ReLEx SMILE often want more than a procedure date. They want a reliable medical evaluation, clear communication, careful follow-up and confidence that their care is being delivered within a structured hospital system. Acibadem Hospitals in Turkey provide ophthalmology services within JCI-accredited hospitals, supported by established clinical pathways and dedicated international patient coordination.

The evaluation for SMILE is personalized. Ophthalmologists review the patient’s prescription, corneal imaging, eye surface health and lifestyle goals before recommending a treatment plan. When the findings suggest that SMILE is not the most appropriate choice, patients may be counseled about other options or advised against surgery. This is an important part of responsible refractive care.

Modern diagnostic pathways are central to treatment planning. Detailed corneal mapping, thickness measurements, refractive testing and ocular health assessments help identify suitable candidates and reduce avoidable risk. The technology used in the procedure itself is designed to create precise corneal tissue planes and a small access incision, while surgical visualization and postoperative monitoring support safe recovery.

For patients traveling from the United States, Europe, the Middle East or other regions, coordination can be as important as the medical procedure. Acibadem International assists patients with appointment scheduling, medical record transfer, interpretation and communication in more than 20 languages. The goal is to help patients understand each step of their visit, from pre-arrival information to postoperative instructions and documentation for follow-up at home.

Care is also integrated within a broader hospital environment. If an eye examination reveals another medical issue, such as diabetes-related eye findings, cataract, glaucoma suspicion or retinal concerns, referral pathways are available within the hospital network. Specialist collaboration helps ensure that refractive surgery decisions are made with the whole patient in mind, not only the glasses prescription.

Patients choose Acibadem not simply because they are seeking treatment abroad, but because they want a clear process: appropriate testing, experienced physicians, evidence-based decision-making, attentive communication and individualized recommendations. For elective vision correction, that process is essential. The right answer may be SMILE, another procedure or no surgery at all. A trustworthy consultation should make that distinction clear.

Taking the Next Step

If you are considering ReLEx SMILE, the most important next step is a comprehensive refractive surgery evaluation. Your prescription alone is not enough to determine candidacy. Corneal shape, thickness, tear-film quality, eye health, age and visual goals all influence whether SMILE is appropriate and what outcome is realistic.

For many eligible patients, SMILE can reduce reliance on glasses or contact lenses and make daily life more convenient. For others, a different vision correction method may offer a better balance of safety and effectiveness. A consultation or second opinion can help you compare options with clarity and make a decision based on medical evidence rather than uncertainty.

Acibadem’s ophthalmology teams and international patient services can help you share your medical information, plan your visit and understand the evaluation process before you travel. If you are ready to learn whether ReLEx SMILE may be suitable for your eyes, you can request a consultation or a second opinion and discuss your goals with a specialist.

This information is general and is not a substitute for professional medical advice. Diagnosis, treatment suitability and recovery expectations should always be discussed with a qualified ophthalmologist who has examined your eyes.