LASIK vs PRK vs SMILE in 2026: Which Laser Eye Surgery Is Best for You?

If you are considering laser vision correction in Melbourne in 2026, you will encounter three main procedures: LASIK, PRK, and SMILE. Each reshapes the cornea to correct refractive error — myopia, hyperopia, or astigmatism — but they differ in technique, recovery, and ideal patient profile. Understanding these differences helps you have a more productive conversation with your surgeon.

What all three procedures aim to achieve

LASIK, PRK, and SMILE all permanently reshape the cornea using laser energy to correct refractive error. Myopia is the most commonly treated condition across all three. LASIK and PRK can also correct hyperopia and astigmatism. SMILE is currently most effective for myopia and myopic astigmatism. When performed on well-selected patients, all three achieve equivalent final visual outcomes.

The differences lie in the method, recovery, and risk profile — not in the final result when the right procedure is matched to the right patient. Selecting the most appropriate procedure depends on individual anatomy, prescription, and lifestyle, not on any universal ranking of one technique over another.

LASIK — the established standard

LASIK uses a femtosecond laser to create a thin hinged flap on the corneal surface. The flap is lifted, an excimer laser reshapes the underlying tissue, and the flap is replaced. Most patients notice significantly improved vision within 24 hours. LASIK is suitable for myopia, hyperopia, and astigmatism in patients with adequate corneal thickness and a normal corneal topography pattern.

Advantages:

• Rapid visual recovery — typically clear within 24 hours
• Minimal discomfort post-operatively
• Suitable for myopia, hyperopia, and astigmatism
• Enhancement possible if needed
• Extensive long-term safety data (30+ years)

Disadvantages:

• Creates a permanent corneal flap — small risk of flap dislocation with significant eye trauma
• Higher rate of temporary dry eye compared to SMILE
• Requires adequate corneal thickness for flap creation plus the underlying reshaping

Best for: Patients with moderate myopia or hyperopia, astigmatism, adequate corneal thickness, who prioritise the fastest visual recovery.

PRK — the original flapless procedure

PRK removes the surface epithelium and applies the excimer laser directly to the corneal surface without creating a flap. Recovery is slower than LASIK, with blurred vision and surface discomfort for 3 to 5 days while the epithelium regenerates. Final visual outcomes at 12 months are equivalent to LASIK. PRK is preferred for thin corneas, contact sport athletes, and patients with dry eye.

Advantages:

• No flap — ideal for thin corneas, contact sport athletes, and certain occupations
• Lower risk of dry eye complications
• Preserves more corneal structural integrity
• Suitable for patients excluded from LASIK due to thin corneas
• Very long-term safety data (35+ years)

Disadvantages:

• Longer, more uncomfortable recovery period (3 to 5 days of surface discomfort)
• Small risk of superficial corneal haze at higher prescriptions, treated or prevented with mitomycin C
• Vision remains blurred for 2 to 4 weeks post-operatively

Best for: Thin corneas, contact sport athletes (AFL, boxing, martial arts), military and law enforcement, patients with borderline dry eye, and patients who have had prior corneal surgery. For a detailed account of the PRK procedure and recovery, see the guide to PRK: what to expect before, during, and after surgery.

SMILE — the newest approach

SMILE uses a femtosecond laser to create a small disc of tissue within the cornea. This lenticule is extracted through a 2 to 4mm incision without removing the surface or creating a flap. Recovery is similar to LASIK. SMILE disrupts fewer corneal nerves than LASIK, resulting in the lowest post-operative dry eye risk of all three procedures.

Advantages:

• Flapless and surface-sparing — corneal biomechanical strength well preserved
• Lowest rate of post-operative dry eye (fewest corneal nerves disrupted)
• Fast visual recovery without surface discomfort
• Accumulating evidence of strong long-term outcomes

Disadvantages:

• Currently most effective for myopia and myopic astigmatism — limited data for hyperopia
• Requires a specific laser platform (Zeiss VisuMax) — fewer centres offer it
• Enhancements are technically more complex than LASIK
• Surgeon experience with the technique is important

Best for: Myopic patients — particularly those concerned about dry eye, active individuals, or those who prefer a flapless procedure with fast recovery.

Side-by-side comparison

LASIK offers the fastest recovery and suits the broadest prescription range. PRK requires a longer recovery but preserves more corneal tissue, making it preferable for thin corneas and contact sport athletes. SMILE offers LASIK-comparable recovery with the lowest dry eye risk. When matched to the right patient, all three achieve equivalent visual outcomes at 12 months.

How do I choose between the three procedures?

No single procedure is best for every patient. The choice between LASIK, PRK, and SMILE depends on corneal thickness and shape, prescription, dry eye status, occupation, and lifestyle. For many patients LASIK offers the most straightforward path. Thin corneas, dry eye, or contact sport participation often favour PRK or SMILE. A detailed pre-operative assessment determines the most appropriate option for each individual.

The factors assessed at a pre-operative consultation include:

• Corneal thickness and shape — measured with topography and tomography
• Prescription — the degree of myopia, hyperopia, and astigmatism
• Dry eye status — assessed carefully before any recommendation
• Lifestyle and occupation — contact sports, occupational vision requirements
• Patient preference — particularly regarding recovery time

At the end of the assessment, a direct recommendation is made: proceed with LASIK, PRK, SMILE, or defer to an alternative such as refractive lens exchange. Patients excluded from laser surgery on safety grounds are given a clear explanation and a discussion of alternatives. For a full picture of laser and lens-based refractive outcomes by procedure type, see the guide to laser refractive surgery and refractive lens exchange outcomes.

Confirming suitability for LASIK specifically involves a detailed corneal assessment. For the full list of candidacy criteria and what the pre-operative assessment involves, see the guide to LASIK candidacy assessment. For a full summary of all refractive surgery options including laser and lens-based approaches, see the refractive surgery overview.

References

1. Reinstein DZ, Archer TJ, Gobbe M. Small incision lenticule extraction (SMILE) history, fundamentals of a new refractive surgery technique and clinical outcomes. Eye and Vision. 2014;1(1):3.
2. American Academy of Ophthalmology. Preferred Practice Pattern: Refractive Errors and Refractive Surgery. San Francisco: American Academy of Ophthalmology; 2023.
3. Shortt AJ, Bunce C, Allan BD. Evidence for superior efficacy and safety of LASIK over photorefractive keratectomy for correction of myopia. Ophthalmology. 2006;113(11):1997–2008.