Quick Answer
Yes, in most cases you can have LASIK retreatment (called an “enhancement”). Enhancement surgery is performed when the initial result falls short of the target refraction — due to undercorrection, overcorrection, or regression. The key limiting factor is corneal thickness: your cornea must retain enough tissue for safe retreatment. Most patients who want an enhancement are eligible. Enhancement rates across high-quality practices are 1–5% over 10 years.
Detailed Explanation
LASIK enhancement — also called LASIK retreatment or second surgery — is a routine procedure performed to refine the result of an initial LASIK treatment. It is not an indication that the original surgery failed catastrophically; it is a corrective step, similar to a prescription update in glasses.
When enhancement is appropriate
Enhancement surgery is typically recommended when:
- Uncorrected visual acuity has not reached the targeted level (undercorrection)
- Overcorrection has produced hyperopia or blurry near vision
- Vision has regressed meaningfully from the initial result (gradual return of myopia)
- Residual astigmatism is affecting visual quality
The key word is “meaningfully.” A residual prescription of -0.25 D that does not affect daily function does not warrant retreatment. A residual of -0.75 D or more that requires glasses for driving warrants a serious discussion about enhancement.
Timing: when can you get the second procedure?
Surgeons generally wait until the refraction has fully stabilized before performing an enhancement. This is typically:
- 3–6 months for most undercorrections
- 6–12 months for overcorrections, which often partially self-correct through regression
- 12 months or more for cases involving significant corneal healing variability
Retreating too early risks compounding an error. The eye needs adequate time to demonstrate its stable refractive endpoint.
Methods for enhancement surgery
There are two approaches:
1. Flap re-lift + additional excimer laser treatment In LASIK, the corneal flap created during the initial procedure can often be identified and re-lifted years — sometimes decades — after the original surgery. The flap interface persists as a plane of cleavage. A surgeon skilled in enhancement procedures uses a blunt spatula to locate and carefully lift the flap margin. The stroma beneath is then re-treated with the excimer laser, and the flap is repositioned.
This approach works well when:
- The flap can be identified and safely re-lifted
- Sufficient residual stromal bed depth remains (minimum 250–300 microns, surgeon-dependent)
- The corneal surface is healthy and regular
2. Surface ablation over the LASIK site (PRK) When the flap cannot be safely re-lifted — due to difficulty locating the margin, thin residual flap, or other anatomical concerns — PRK (photorefractive keratectomy) is performed over the prior LASIK site. The epithelium is removed, the stroma is treated with the laser, and a bandage contact lens is placed while the surface heals.
PRK enhancement has a longer recovery than flap re-lift (3–5 days of more significant discomfort vs. 1–2 days) but equivalent long-term outcomes.
The critical limiting factor: corneal thickness
Every enhancement removes additional corneal tissue. The cornea must maintain a minimum safe thickness — most surgeons target a residual stromal bed of at least 250 microns post-enhancement, with a total corneal thickness above 400 microns. If the remaining tissue is insufficient, enhancement is not safe.
This is why the initial LASIK procedure’s planning matters so much: a surgeon who removes only as much tissue as necessary to achieve the correction preserves the maximum tissue reserve for potential future enhancement.
Enhancement under “lifetime guarantee” programs
Many LASIK practices offer enhancement programs — sometimes labeled “lifetime guarantees” — that include retreatment at no additional cost within specified parameters. These programs vary significantly:
- Time limits (some cap eligibility at 5 or 10 years)
- Prescription limits (eligibility may require staying within a certain range)
- Annual exam requirements at the same practice
- Exclusions for prescription changes unrelated to original treatment
Read all terms before your initial procedure. A lifetime program with extensive exclusions may be worth less than it appears.
LASIK Surgery Awards evaluates practices on the clarity and fairness of their enhancement policies as part of overall patient care standards.
Important Considerations
Enhancement is not the same as “fixing a failure.” Most enhancements are minor refinements. Viewing them as failure invites unnecessary anxiety and may discourage patients from seeking a legitimate improvement to their outcome.
A third LASIK procedure is rare and requires careful evaluation. While technically possible if tissue allows, most experienced refractive surgeons are cautious about a third excimer procedure and may recommend alternative correction methods (scleral lenses, phakic IOLs) instead.
Enhancement risk profile is comparable to the original procedure. Patients sometimes assume retreatment is riskier than the original surgery. For appropriately selected enhancement candidates with adequate corneal tissue, the risk profile is similar.
Regression-related enhancement is not guaranteed. If your vision changes due to natural axial myopia progression unrelated to the original treatment, some programs may not cover retreatment under their guarantee terms. Confirm this specifically.
What to Do Next
1. If you recently had LASIK and are disappointed with your initial result, wait for your surgeon’s recommended stabilization window before discussing enhancement. Premature retreatment adds variability. 2. If you are planning your first LASIK procedure, ask the practice specifically about their enhancement policy in writing before signing consent documents. 3. If you are considering LASIK at a practice that does not offer any enhancement policy, weigh this against practices that do — the long-term value of included retreatment is real.
For a full picture of what to expect if your initial results fall short, read What Happens If LASIK Fails?.
Related Questions
Wondering whether your vision after LASIK is expected to stay stable long-term? Read Is LASIK Permanent or Does It Wear Off? for a detailed look at long-term durability.
Curious about cost implications of retreatment at practices without enhancement programs? See How Much Does LASIK Eye Surgery Cost? for context on retreatment pricing.
Trying to find a practice with a clear, fair enhancement policy? Read What to Look for in a LASIK Surgeon for evaluation criteria.