Can You Get LASIK Twice?

Yes, some adults can get LASIK twice. A second procedure, often called an enhancement or touch-up, treats a remaining or returning prescription. It depends on what caused the blur, whether your vision is stable, and your cornea’s health and thickness. An eye exam comes before choosing surgery or another option. FDA: suitability for LASIK, research on repeat treatment.

View full-size corneal thickness diagram

Why the tissue left beneath the flap matters: in this example, 280 microns − 50 microns = 230 microns after the proposed treatment. A micron (µm) is one-thousandth of a millimeter. The number refers to the supporting tissue under the flap, not the whole cornea. A commonly cited lower limit is 250 µm (0.25 mm); some surgeons use 300 µm or more. The example falls below both. Thickness alone does not establish that another surgery is safe. Repeat-LASIK study, university surgical teaching, slide 32.

You had LASIK so you could rely less on glasses. Now road signs look soft again, or reading takes more effort. Another operation is one possible path. It is not the only one.

This guide is for adults whose vision has changed after LASIK. It explains repeat surgery, why the cause of blur matters, and where nonsurgical care—including sleepSEE Ortho-K—can fit.

What is a LASIK enhancement?

A LASIK enhancement is another surgical procedure for a prescription left after the first surgery or one that returns later. A “touch-up” is still invasive eye surgery. It removes more corneal tissue. The terms “touch-up” and “enhancement” do not mean risk-free or noninvasive care.

A surgeon may lift the existing LASIK flap and apply more laser treatment. Another approach is PRK, which treats the surface instead of lifting the flap. The choice depends on your eyes and the risks of each method. A second procedure does not always mean making a new flap. Study comparing flap-lift and surface treatment.

Why has your vision changed?

Blur after LASIK does not always mean the same problem has returned. Finding the cause helps your doctor choose care that addresses it.

• Your distance prescription has changed. Nearsightedness can return after surgery. Doctors call this myopic regression. Studies have examined Ortho-K for this specific problem. Post-surgery Ortho-K study.
• Your eyes are dry. Dry eye can affect vision and comfort. LASIK can cause or worsen dryness, so your eye surface needs attention before another procedure. FDA: LASIK suitability.
• Close-up focus is changing with age. Presbyopia is the loss of near focusing ability as the natural lens becomes less flexible. It happens as people age, including after LASIK. Correcting distance vision does not stop that process. NEI: presbyopia.
• A cataract is affecting the lens inside your eye. A cloudy lens can cause blur, glare, and trouble at night. More laser treatment on the cornea does not remove a cataract. NEI: cataracts.

Other eye problems can also affect vision. If you develop new, unusual, or worsening symptoms after surgery, contact your eye doctor promptly. FDA: care after LASIK.

Who can have LASIK again?

A past LASIK result does not establish that more surgery is right for you. Your surgeon needs to check:

1. Age and a stable prescription. Your measurements should stop changing before more surgery. Compare prescriptions over time, not just your age or one exam.
2. Corneal thickness and shape. The cornea is the clear front surface of your eye. Its condition and the tissue left after your first surgery affect the decision.
3. Dryness and eye health. Treating the eye surface may be part of the plan before considering a procedure.
4. What you want to improve. Distance blur, reading difficulty, glare, and halos are different concerns. One treatment will not necessarily address all of them.

Ask for the specific reason if another surgeon has turned you down. That reason also matters when considering contact lenses or Ortho-K. FDA: suitability, FDA: surgery checklist.

Does age matter for another LASIK procedure?

Yes, but there is no birthday that proves your eyes are ready. The FDA says no LASIK lasers are approved for people under 18. The American Academy of Ophthalmology describes candidates as 18 or older, ideally over 21, with little prescription change in the past year. These are general LASIK guidelines, not automatic clearance for a second procedure. FDA: suitability, AAO: LASIK.

Vision can still change through your twenties. A study that followed young adults from age 20 to 28 found that more than one-third had myopia progression. It was not a trial of LASIK timing, so it does not prove that everyone should wait until 28. It does support checking your own prescription history carefully. Raine Study, 2022.

How corneal scans help guide the decision

Corneal scans help your eye doctor assess thickness and shape, look for disease and compare changes over time. They can help diagnose and monitor conditions such as keratoconus, which causes thinning and bulging. Tomography maps the corneal surfaces; suitable anterior-segment OCT imaging can show layers in cross-section. Equipment and services vary by provider. Corneal imaging, research on OCT flap and stromal-bed measurements.

Full corneal thickness is not the same as the tissue left beneath a LASIK flap. A repeat-surgery assessment also considers the flap and the amount of tissue the proposed treatment would remove. Your doctor combines these findings with prescription history, eye health and vision goals. A thin cornea does not automatically make Ortho-K suitable. Research on estimating tissue before repeat LASIK.

What is the risk if too little tissue remains?

The main concern is corneal ectasia: the weakened cornea can bulge and change shape. This can cause worsening blur, irregular astigmatism and vision that glasses may no longer fully correct. Changes can develop long after surgery. Removing more tissue from an already weakened cornea can make the problem worse. Clinical reference: ectasia after LASIK, FDA: thin corneas and previous surgery.

In our illustration, the proposed second treatment leaves 230 microns beneath the flap, below the commonly cited 250-micron lower limit. That is a reason to stop and reassess the proposed surgery. It does not mean damage is certain. Nor does a result above 250—or even 300—guarantee safety. The surgeon must also assess corneal shape, tissue measurements and other risk factors. Clinical reference: LASIK screening.

A smaller prescription correction may need less tissue removal than the first operation. It is still another operation on a cornea that has already been treated. The technique and risks can differ from the first surgery; lifting an old flap can allow surface cells to grow underneath it, while surface treatment has its own healing and haze risks. Study comparing repeat-treatment methods.

Why dry eye can pause the surgery decision

Left: continuous tear coverage. Right: patchy tear coverage. Tears help keep the eye surface smooth. Dry eye can cause blur and discomfort, and LASIK can worsen dryness. Your doctor may treat the eye surface before deciding about another procedure. This is a schematic, not a diagnosis or a rule that all dry eye permanently rules out surgery. NEI: dry eye, FDA: suitability.

Three checks before choosing the next step

1. Prescription: is it stable, and what is causing the blur?
2. Cornea: what do the remaining tissue and shape show?
3. Eye surface: does dryness need treatment first?

Your doctor considers these findings together before discussing surgery, glasses, daytime lenses, or an Ortho-K assessment. No single check establishes candidacy.

How long should you wait?

Stable measurements matter more than a date on the calendar. For an enhancement after the first surgery, the FDA advises consistent eye measurements at two visits at least three months apart before another operation. That does not mean everyone qualifies at three months. FDA: recovery and enhancement.

If your LASIK was years ago, you still need a fresh exam. Your old results help explain your history; today’s measurements guide the next step.

What are your options?

Your doctor can help compare these paths once the cause of blur is clear.

Flap-lift and surface procedures have different tradeoffs. One study of 108 treated eyes found more surface-cell growth beneath the flap in the flap-lift group and more haze in the surface-treatment group. Those results do not predict your personal risk. Repeat-treatment study.

Discuss dry eye, glare, halos, and possible loss of vision with your surgeon. Better distance focus does not ensure that glare or halos will improve. FDA: LASIK risks, FDA: enhancement expectations.

For a broader comparison, see LASIK alternatives.

What if your cornea is too thin for more LASIK?

You may still have surgical and nonsurgical options. First, find out whether your cornea is thin but stable, or is weakening and changing shape. That distinction affects which treatments make sense. A refusal for LASIK is not approval for another procedure.

Nonsurgical options

• Glasses: can correct a regular prescription without removing tissue. They may not fully correct blur from an irregular corneal shape.
• Daytime contact lenses: soft lenses may suit a regular prescription. Special rigid or scleral lenses may help when the surface is irregular. Scleral lenses rest on the white of the eye and bridge over the cornea. These need a specialist fit; they do not stop progressive ectasia. NEI: special contact lenses.
• Ortho-K: selected post-LASIK patients with returning nearsightedness can be assessed for overnight lenses. They do not remove corneal tissue. Thinness alone does not establish suitability, and Ortho-K is not a treatment to strengthen a cornea with progressive ectasia. The small studies discussed below do not establish safety for every thin or weakened cornea. Post-LASIK Ortho-K study.
• Dry-eye care: if dryness contributes to blur, treating it may improve vision and comfort before choosing another correction. NEI: dry eye.

Surgical options require a separate assessment

PRK after LASIK treats the surface without lifting the old flap. It still removes corneal tissue and carries healing and haze risks. It is an option for some selected eyes, not an automatic workaround for a cornea judged too thin or unstable. Study of repeat-treatment methods.

An implantable lens, such as an ICL, can correct an eligible prescription without laser removal of corneal tissue. It is surgery inside the eye. Eye anatomy, space for the lens, corneal cell counts, prescription and device labeling all matter. Risks include cataract, pressure problems and loss of corneal cells. It does not repair corneal ectasia. FDA: phakic-lens candidacy, FDA: implant risks.

Cataract surgery may address blur caused by a cloudy natural lens. More corneal laser treatment would not remove that cause. Lens replacement is a different operation with its own assessment and risks, not a default response to a thin cornea. NEI: cataracts.

If the cornea is weakening, stabilization comes first

For progressive post-LASIK ectasia, a corneal specialist may recommend corneal cross-linking to help stabilize the tissue. Its main purpose is to limit further weakening, not to promise glasses-free vision or make another LASIK safe. Special lenses may still be needed for clear vision. Clinical trial evidence on cross-linking.

Can Ortho-K help after LASIK?

For selected adults with returning nearsightedness, Ortho-K is a nonsurgical option worth discussing. Orthokeratology, usually called Ortho-K, uses specially fitted lenses to make a temporary change in the cornea’s shape. You wear the lenses during sleep and remove them on waking. The goal is clear daytime vision without daytime glasses or contacts.

Ortho-K does not remove more corneal tissue. It needs continued wear on the schedule your doctor prescribes. Its vision-correction effect is reversible; that does not mean every possible adverse effect is reversible. Post-LASIK Ortho-K research.

What does the research show?

A 2015 study followed 12 people, involving 21 eyes, with returning nearsightedness after refractive surgery. Vision without glasses improved during Ortho-K treatment over roughly a year of follow-up. Read the study.

A 2025 study examined 14 people, involving 26 eyes, whose LASIK had been performed more than ten years earlier. It followed Ortho-K use over 30 months and assessed the cornea and LASIK flap. The authors reported encouraging results. Read the study.

These are small studies of selected patients. They support considering this option; they do not prove that every post-LASIK eye is suitable or that uncommon problems cannot occur.

sleepSEE’s post-LASIK program starts with an evaluation. The provider checks whether your prescription, corneal measurements, and eye health support a lens fit. Being unable to have more LASIK does not automatically make you a candidate for Ortho-K.

Overnight lenses also need careful cleaning, handling, and follow-up. Contact-lens wear carries infection risk. Ask your provider to explain the specific lens, its FDA labeling, and how it applies to your surgical history. FDA: contact-lens risks.

Learn about night contacts and their routine.

What does post-LASIK sleepSEE care cost?

Fees vary by provider and the care your eyes need. Ask your chosen sleepSEE provider for a written quote for post-LASIK assessment and fitting. The founder’s perspective above includes a clearly labeled local fee example.

Ask for a written list of included lenses, fitting visits, and follow-up care, plus the costs after year one. Care supplies and services outside the program are additional. See sleepSEE costs and payment details.

A surgical enhancement is a different service. Ask the surgeon for a written quote and any terms attached to an earlier surgery package. Do not assume “touch-up” means free treatment.

What should you ask at your exam?

Bring your old LASIK records if you have them, your current glasses, and a list of symptoms. These questions can help:

• What is causing my blur—distance prescription, dry eye, reading focus, or something else?
• What do my corneal measurements show?
• What would more surgery improve, and what would it leave unchanged?
• Could glasses, daytime contacts, or Ortho-K meet my goals?
• If you recommend Ortho-K, what makes my post-LASIK eyes suitable?
• What costs, follow-up visits, and care steps should I plan for?

To explore sleepSEE, find a provider and ask for an evaluation for vision changes after LASIK. The exam determines whether the program fits your eyes.

Common questions

Can you get LASIK twice after ten or twenty years?

Sometimes. The number of years alone does not answer the question. Your current prescription, corneal health, and cause of blur determine which options are worth considering. A fresh exam is the starting point. FDA: suitability.

How many times can you get LASIK?

There is no repeat-treatment allowance that applies to everyone. Each operation changes the cornea, and a surgeon must assess whether enough suitable tissue remains. Having had one enhancement does not mean another is available. FDA: LASIK risks.

Will a second LASIK procedure stop me needing reading correction?

It will not stop the age-related loss of near focus. Reading glasses, contact lenses, or other approaches can help manage that change. No vision-correction procedure stops your eyes from aging, guarantees unchanged vision for life, or guarantees you will be glasses-free for life. NEI: presbyopia.

Can I choose Ortho-K even if I could have more surgery?

You can ask to compare both. Your preference matters, and Ortho-K has its own fitting requirements. A provider experienced with post-surgical eyes can assess whether it is an option for you. Research on Ortho-K after refractive surgery.