LASIK (Laser-Assisted In Situ Keratomileusis)

LASIK (Laser-Assisted In Situ Keratomileusis) is a precise, established surgical procedure designed to correct common refractive errors, including nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. By gently reshaping the cornea—the clear front window of the eye—LASIK allows light entering the eye to focus accurately onto the retina, significantly reducing or eliminating reliance on prescription glasses and contact lenses.

How LASIK Works: The Surgical Process

LASIK is a two-step procedure performed on an outpatient basis using advanced ultra-fast lasers.

Step 1: Micro-Flap Creation

A protective, ultra-thin hinged flap is created on the surface of the cornea using a femtosecond laser. This flap is gently folded back to access the underlying corneal tissue.

Step 2: Corneal Reshaping

An excimer laser, guided by detailed diagnostic mapping of your eye, applies cool microscopic pulses of light to reshape the microscopic contours of the corneal bed. The protective flap is gently repositioned. It adheres naturally without the need for stitches, serving as a natural bandage during the immediate recovery phase.

What LASIK Can Correct

Refractive errors occur when the shape of the cornea prevents light from focusing directly on the retina. LASIK optimizes the corneal curvature to correct three primary visual conditions:

• Nearsightedness (Myopia): Occurs when the cornea is overly steep or the eye is slightly longer than average, causing distant objects to appear blurry.
• Farsightedness (Hyperopia): Occurs when the cornea is too flat or the eye is shorter than average, making near objects difficult to focus on clearly.
• Astigmatism: Occurs when the cornea is irregularly shaped—more like a rugby ball than a soccer ball—causing distorted or blurred vision at all distances.

Evaluating Candidate Suitability

While LASIK is a highly effective procedure, individual suitability depends on several clinical factors evaluated during a comprehensive assessment.

General Eligibility Criteria

• Age: Candidates are typically 21 years or older with stable vision.
• Prescription Stability: Your vision prescription should remain unchanged for at least 12 consecutive months.
• Overall Eye Health: Eyes must be free from significant conditions such as untreated dry eye syndrome, keratoconus, or active ocular infections.

The Laser Suitability Screening

Every patient undergoes an in-depth Laser Suitability Screening before proceeding with surgery. Using advanced corneal topography and optical tomography, the corneal thickness, surface curvature, and overall tissue health is evaluated to confirm whether LASIK or an alternative procedure is the safest, most effective option for your eyes.

Recovery and Post-Operative Expectations

LASIK is designed to facilitate a smooth, manageable recovery process. Most patients experience significant visual improvement within 24 to 48 hours following surgery.

• Immediate Post-Op: Mild irritation or a sensation similar to an eyelash in the eye is normal for the first few hours following treatment.
• Follow-Up Care: Structured post-operative check-ups monitor the healing process and ensure your eye health is tracking appropriately.
• Resuming Activities: Most patients return to non-strenuous work and routine daily activities within 48 hours, adhering to basic precautions regarding water contact and eye rubbing.

Frequently Asked Questions (FAQ)

How long does the LASIK procedure take?

The entire process usually takes about 20 to 30 minutes for both eyes, with the active laser application lasting only 10 to 60 seconds per eye. You should plan to be at the clinic for approximately two hours on the day of your procedure to allow time for pre-operative preparation and initial post-procedure observations.

What is the expected recovery time after LASIK?

Most patients experience significantly improved vision within 24 to 48 hours. You can typically return to work and resume driving within a day or two. Full visual stabilization and fine-tuning may take a few weeks as your corneas heal, during which time you will use prescribed lubricating and anti-inflammatory eye drops.

Is LASIK a safe procedure?

Yes. LASIK is one of the most widely studied and frequently performed elective surgical procedures globally, with a long track record of safety and clinical predictability. Safety is maximized through strict patient selection—advanced diagnostic mapping during your Laser Suitability Screening ensures your corneal thickness and shape are suitable before proceeding.

Does the LASIK procedure hurt?

No. Anesthetic eye drops are applied before the procedure to numb the surface of your eye completely. While you may feel a mild sensation of pressure on the eye for a few seconds during the creation of the corneal flap, the treatment itself is painless. Minor irritation or dryness for a few hours after surgery is normal and easily managed.

Will I still need reading glasses as I get older?

LASIK corrects distance, near, or astigmatism issues based on your current prescription. It does not prevent presbyopia—the natural, age-related changes to the eye’s internal lens that typically affect near focus starting in your mid-40s. Patients over 40 interested in addressing near vision alongside distance focus may be evaluated for alternative options, such as PRESBYOND® Laser Blended Vision.

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