LASIK enhancement is typically performed by lifting the original corneal flap and applying additional excimer laser ablation to refine the residual refractive error.
Flap relifting avoids creation of a new stromal interface and preserves biomechanical stability when adequate residual stromal bed remains. Large clinical series analysing retreatments after LASIK demonstrate excellent safety and predictability when enhancement is performed after refractive stability has been confirmed¹.
Timing matters. Enhancements are usually delayed for a minimum of three months following primary LASIK to allow epithelial and refractive stabilisation. Early treatment risks correcting transient shifts related to wound healing.
Flap relift is generally straightforward within the first 12–24 months, although even late relifts have been reported successfully. Careful surgical handling reduces risk of epithelial ingrowth, one of the known but uncommon complications of flap relift². When ingrowth occurs, prompt management restores optical clarity.
Enhancement outcomes closely mirror primary LASIK accuracy. Modern outcome analyses show high rates of patients achieving 20/20 or better uncorrected vision following retreatment³.
Key principles for safe LASIK enhancement include:
- Adequate residual stromal bed (typically ≥300 microns)
- Stable refraction documented on repeated testing
- Normal corneal topography
- Optimised ocular surface
When these criteria are met, LASIK enhancement is highly predictable and well tolerated.
Retreatment is refinement, not repetition of risk.
References
- Randleman JB, White AJ, Lynn MJ, Stulting RD. Incidence, outcomes, and risk factors for retreatment after LASIK. Ophthalmology. 2009;116(11):2100-2107.
- Wang MY, Maloney RK. Epithelial ingrowth after LASIK. J Cataract Refract Surg. 2000;26(3):365-372.
- Sandoval HP, Donnenfeld ED, Kohnen T, et al. Modern laser in situ keratomileusis outcomes. J Cataract Refract Surg. 2016;42(8):1224-1234.
Related Topics
- Does an Enhancement After Laser or Lens Replacement Surgery Mean Something Went Wrong?
- What Is a Laser Eye Surgery Enhancement?
- How Common Is Enhancement After LASIK?
- Why Are Higher Prescriptions More Likely to Require Enhancement?
- Why Do Hyperopic Laser Treatments Regress More Frequently?
- Why Is Residual Hyperopia After Lens Surgery Different?
- How Is LASIK Enhancement Performed?
- How Is Enhancement Performed After SMILE?
- What Is Residual Stromal Bed and Why Does It Matter?
- Can Enhancement Affect Night Vision or Optical Quality?
- When Should Enhancement Not Be Performed?
- How Long Should You Wait Before Laser Enhancement?
- What Causes Regression After Laser Eye Surgery?
- What Is Topography-Guided Enhancement?
- Can Enhancement Increase Glare or Halos?
- Why Does Astigmatism Sometimes Remain After Laser Eye Surgery?
- What Is Epithelial Remodelling and Why Does It Matter?
- Is Enhancement Safer Than Intraocular Lens Exchange?
- What Is the Risk of Ectasia After Enhancement?
- Does Enhancement Affect Long-Term Vision Quality?
- What Does an Enhancement Cost?
