LASIK Surgery

Overview

LASIK (Laser-Assisted In Situ Keratomileusis) is a laser refractive procedure that reshapes the cornea — the clear, dome-shaped front surface of the eye — so that light focuses precisely on the retina. It is used to reduce or eliminate the need for glasses and contact lenses in people with nearsightedness (myopia), farsightedness (hyperopia), and astigmatism.

During LASIK the surgeon creates a thin, hinged flap in the cornea (using a microkeratome blade or, more commonly today, a femtosecond laser), lifts it, and uses a computer-guided excimer laser to remove microscopic amounts of tissue and change the cornea’s curvature. The flap is then repositioned and adheres without stitches. The whole procedure usually takes only about 10–15 minutes for both eyes.

LASIK has a strong track record and high patient satisfaction, but it is elective surgery on healthy eyes, so careful screening matters and results vary by individual. This page is an educational overview only — it is not medical advice, and no outcome can be guaranteed.

Who May Need This

LASIK is aimed at adults who depend on glasses or contact lenses for a refractive error and want greater freedom from them. Good candidates generally have a stable prescription for at least a year, healthy eyes free of significant disease, corneas thick and regular enough to treat safely, and realistic expectations.

It is often chosen by people whose lifestyle, work, or sport makes glasses and contacts inconvenient. LASIK is not suitable for everyone: very high prescriptions, thin or irregular corneas, keratoconus, significant dry eye, or certain health conditions may make an alternative procedure safer. Only a complete eye examination can determine whether you are a candidate.

When It May Be Recommended

A surgeon may recommend LASIK when your refractive error falls within the treatable range, your corneal measurements are favourable, and you are motivated to reduce dependence on corrective lenses. It is typically considered once the prescription has been stable, because operating on a shifting prescription can lead to under- or over-correction.

LASIK is elective — there is rarely a medical urgency — so timing is a personal choice made after weighing the potential benefits against the risks. If screening reveals a concern such as a thin cornea or early keratoconus, the surgeon may recommend a surface procedure (PRK) or a lens-based approach instead.

Diagnosis and Evaluation

A LASIK work-up is detailed. It usually includes measurement of your refraction, corneal topography (a map of the corneal surface), corneal thickness (pachymetry), pupil size, and a tear-film assessment for dry eye. The surgeon also examines the retina and overall eye health and reviews your general medical history and medications.

You will normally be asked to stop wearing contact lenses for a period before testing, because contacts can temporarily change the corneal shape and distort measurements. A second opinion can be valuable, especially if your first assessment raises questions about corneal thickness or shape.

Treatment Options

LASIK is one of several vision-correction options. Alternatives include PRK and LASEK (surface laser procedures that remove the outer corneal layer instead of making a flap, often preferred for thinner corneas or contact-sport athletes), and SMILE (a flapless procedure that removes a small lens-shaped piece of tissue through a tiny incision).

For prescriptions outside the laser range, lens-based procedures such as implantable collamer lenses (ICL) or refractive lens exchange may be more appropriate. Non-surgical options — glasses and contact lenses — remain safe and effective for many people. The right choice depends on your prescription, corneal anatomy, age, and preferences.

How It Is Performed

LASIK is an outpatient procedure done under numbing eye drops; a mild sedative may be offered to help you relax. A lid holder keeps the eye open, and a suction ring briefly stabilises it while a femtosecond laser or microkeratome creates the corneal flap. You may notice dimming of vision for a few seconds during this step.

The surgeon lifts the flap and asks you to look at a target light while the excimer laser reshapes the exposed corneal bed; eye-tracking technology follows small movements. The laser pulses last only seconds to tens of seconds per eye. The flap is then floated back into position, where it seals on its own. Both eyes are usually treated in the same session.

Preparation

Preparation includes stopping contact lens wear as instructed, arranging for someone to drive you home, and avoiding eye make-up, perfumes, and lotions on the day of surgery. Tell your surgeon about all medications and any history of dry eye, cold sores around the eye, or previous eye surgery.

If you are travelling abroad for LASIK, plan to arrive with enough time for pre-operative testing, bring your glasses prescription and any prior eye records, and budget for the post-operative checks your surgeon recommends before you fly home.

Benefits and Expected Goals

The goal of LASIK is to reduce dependence on glasses and contact lenses by sharpening focus. Many appropriately selected patients achieve vision that is adequate for everyday activities such as driving and reading without correction, and recovery of functional vision is often rapid.

Benefits vary with your starting prescription and eye characteristics. LASIK corrects the refractive error present at the time of surgery; it does not prevent future age-related changes such as presbyopia or cataracts, so some people still need reading glasses later. Your surgeon can discuss realistic goals for your eyes.

Risks and Possible Complications

LASIK is generally safe, but it is surgery and carries risks that you should understand fully before deciding.

• Dry eyes, which can persist for weeks to months and occasionally longer
• Glare, halos, starbursts, or difficulty with night vision
• Under-correction, over-correction, or regression, sometimes needing enhancement
• Flap complications such as wrinkles, displacement, or debris under the flap
• Infection or inflammation of the cornea (rare but serious)
• Rarely, a loss of best-corrected vision or the development of corneal ectasia (progressive thinning)

Your surgeon will explain the risks that apply to your eyes and how complications would be managed. Report worsening pain, redness, discharge, or vision loss promptly.

Recovery, Follow-up & Aftercare

Immediately after LASIK the eyes may feel gritty and watery, and vision is often hazy for a few hours; resting with the eyes closed helps. You will use lubricating and medicated drops as prescribed and will typically wear protective shields at night for a short period to avoid rubbing the eye during sleep.

Most people see well enough to resume light activities within a day or two, though vision can fluctuate and full stabilisation may take several weeks. Avoid eye rubbing, swimming, hot tubs, and dusty or smoky environments as advised. Attend all follow-up visits so the healing flap and your vision can be checked; arrange this care with a local eye doctor before returning home.

Medical Tourism Planning

If you are considering LASIK abroad, choose a JCI- or ISO-accredited eye hospital with modern femtosecond and excimer laser platforms and an experienced refractive surgeon. Ask how candidacy is screened, which laser technology is used, and what the enhancement policy is if a touch-up is needed.

Plan your trip around pre-operative testing and the initial follow-up visits, confirm which drops and protective wear you will need, and arrange continuing eye care at home. Request a written treatment plan and cost estimate before you travel, and consider medical travel insurance.

Estimated Cost Factors

The cost of LASIK depends on the country and clinic chosen, the surgeon’s experience, the laser technology used (for example bladeless femtosecond LASIK versus older methods), whether wavefront-guided or topography-guided treatment is included, and whether enhancements and follow-up visits are bundled into the price.

Many international destinations offer LASIK at a fraction of typical US prices, but quotes vary widely and online figures are only estimates. Always request a personalized written quote that specifies exactly what is included — testing, both eyes, follow-up, and any enhancement — before deciding.

Choosing a Hospital or Specialist

Look for an eye hospital with recognised accreditation and a dedicated refractive surgery service. Confirm that the surgeon is a qualified ophthalmologist with substantial LASIK experience, and ask about the volume of procedures performed and how candidates who are not suitable for LASIK are counselled toward alternatives.

Ask about the equipment, the screening protocol, how complications and enhancements are handled, and what international patient support and follow-up are available. Transparent written pricing and clear candidacy criteria are signs of a quality programme.

Alternatives

Alternatives to LASIK include PRK/LASEK (surface laser procedures without a flap), SMILE (a small-incision, flapless technique), and lens-based procedures such as implantable collamer lenses or refractive lens exchange for higher prescriptions or older patients. Non-surgical correction with glasses or contact lenses remains a safe, reversible option.

Each approach has different candidacy requirements, benefits, risks, and recovery. Discuss all of them with your eye surgeon so the plan fits your prescription, corneal anatomy, age, and lifestyle.

Questions to Ask Your Doctor

• Am I a good candidate for LASIK, or would PRK, SMILE, or a lens-based procedure be safer for my eyes?
• What are my corneal thickness and topography results, and do they raise any concerns?
• Which laser technology will you use, and how many LASIK procedures have you performed?
• What results are realistic for my prescription, and how likely am I to still need glasses?
• What are the specific risks in my case, and what is your policy on enhancements?
• How long should I stay in-country, and when can I safely fly home?
• What follow-up will I need, and what is included in the written cost estimate?