LASER EYE SURGERY – ENHANCEMENT
This page is for patients who have had LASIK and are not fully satisfied with their visual outcome, and who want to understand what enhancement involves, when it is appropriate, and what the success rate is.
Enhancement Is Refinement, Not Failure
A small number of LASIK patients, under 2% in Mr Mfazo Hove’s 2024-2025 series, have a residual refractive error after surgery that is clinically meaningful and stable enough to warrant re-treatment.¹ Enhancement is a second laser procedure that refines the original correction. It is not evidence that the original surgery was performed incorrectly. It is evidence that biological corneal healing is not perfectly predictable, and that an honest surgical practice has a pathway for managing the outcome when the result falls short of the target.
The distinction matters because enhancement eligibility and criteria are often not explained clearly before primary LASIK surgery. Patients who develop a residual prescription and are then told enhancement is available, but at additional cost, are encountering a commercial model that Blue Fin Vision® does not operate. At Blue Fin Vision®, enhancement provision for premium pathway patients carries no additional surgeon fee. This policy is explained at your initial consultation and confirmed in your written treatment plan. If you are researching enhancement before your primary LASIK, ask your provider now whether enhancement is included or charged separately, and what the eligibility criteria are.
When Enhancement Is Considered
Residual myopia: the most common indication. A patient targeted to plano is measured at -0.75D at three months with stable refraction. Enhancement is offered once the prescription has been stable for at least two consecutive measurements over a minimum of three months.¹
Residual astigmatism: cylinder remaining above 0.5D at three months with stable refraction. Often correctable with a brief wavefront-guided surface treatment.
Regression: the prescription has returned toward its pre-operative level after an initial period of good correction. Enhancement timing depends on the rate of regression, re-treating an unstable prescription produces an unstable result.
Night vision complaints: halos or glare persisting beyond six months with measurable higher-order aberrations at wavefront analysis. Wavefront-guided enhancement may reduce the optical profile driving the symptoms.
The Stability Requirement
Enhancement is not offered on the basis of patient preference alone. Two conditions are required: refraction is stable over at least two measurements separated by at least six weeks, and the residual error is above the clinical threshold for meaningful re-treatment (typically 0.5D sphere or cylinder).² Treating an unstable prescription produces an unstable result. Patience at this stage is clinically correct, not evasive. If you are requesting enhancement before the three-month window, Mr Hove will explain why waiting produces a better outcome and schedule your re-assessment accordingly.
Flap Lift vs Surface Enhancement
LASIK flap lift is applicable when there is an original LASIK up to approximately 10 years post-surgery. Recovery is 24-48 hours. The main risks are flap re-adhesion and temporary dry eye. Over 90% of patients achieve 20/20 post-enhancement in published series.²
PRK surface enhancement is applicable when the flap is inaccessible or the cornea is thin. Recovery is 3-4 weeks. Risks include surface healing and mild haze. Over 90% of patients achieve 20/20 at 3 months.²
Clinical Perspective
Mr Mfazo Hove, consultant ophthalmic surgeon at Blue Fin Vision®, performs every LASIK enhancement personally, using the same Schwind Amaris 750RS laser platform that delivered your primary treatment. The enhancement rate in our 2024-2025 series was under 2%, a figure that reflects both the quality of biometric selection and the accuracy of primary laser delivery. Of patients who underwent enhancement, over 90% achieved 20/20 or better at the post-enhancement six-week review, a rate that matches published peer-reviewed enhancement series and exceeds typical industry benchmarks.¹ ² Enhancement eligibility is explained at the primary consultation so patients understand the pathway before surgery, not after.
Clinical Takeaway
LASIK enhancement is refinement, not failure. Under 2% of Mr Hove’s LASIK patients require enhancement. The indication is residual refractive error above 0.5D with stable refraction at minimum three months. Flap lift is available for up to ten years post-LASIK. At Blue Fin Vision®, enhancement carries no additional surgeon fee for premium pathway patients.
References
- Hersh PS, Fry KL, Bishop DS. Incidence and associations of retreatment after LASIK. Ophthalmology. 2003;110(4):748-54.
- O’Brart DP. Excimer laser refractive surgery: a review of developments in laser technology, ablation profiles, eye tracking, customisation, and retreatments. Clin Exp Optom. 2014;97(5):431-42.
- Taneri S, Zieske JD, Azar DT. Evolution, techniques, clinical outcomes, and pathophysiology of LASEK: review of the literature. Surv Ophthalmol. 2004;49(6):576-602.
- El Danasoury MA, Bains HS. Management of residual refractive errors after photorefractive procedures. Curr Opin Ophthalmol. 2002;13(4):249-57.
- Bailey MD, Mitchell GL, Dhaliwal DK, Boxer Wachler BS, Zadnik K. Patient satisfaction and visual symptoms after laser in situ keratomileusis. Ophthalmology. 2003;110(7):1371-8.
