How Long Does LASIK Last? The Cornea Holds, the Eye Ages

Typed the way most people search it, "how long does lasik last" has a three-part answer: the operation takes about ten minutes for both eyes, most people are back to daily life within one to two days, and the corneal tissue the laser removes does not grow back. That is why the distance correction holds for decades in most people. The worry for anyone flying in is the middle number: whether a few days in Seoul are enough before the flight home.

I'm Kim Sun-young, Medical Director at Healing Eye Clinic in Gangnam, where one dedicated surgeon stays with you from the exam through surgery and every follow-up.

The last row is where most of the confusion sits, and it's the one your own numbers answer. Send a photo of your current prescription on WhatsApp, plus an older one from a year or two ago if you still have it. I'll look at whether the numbers have held steady and tell you how many days a realistic trip would need for the exam, surgery and next-day check.

How long does LASIK surgery last on the day itself?

The operation itself is short: both eyes usually take about ten minutes. Numbing drops are used instead of an injection, and most people describe a mild sense of pressure rather than pain.

A common belief is that LASIK is a long, draining procedure. Mechanically, it's a sequence of small steps. In Clear LASIK, a laser creates a thin, uniform flap in the cornea, the flap is lifted, and an excimer laser (at our clinic, the AMARIS Red) reshapes the tissue beneath according to a profile designed from your exam data. The flap is laid back and adheres without stitches, and we check the eye the same day.

The kernel of truth in the myth is that the visit is much longer than ten minutes.

Before anyone talks about surgery, I measure corneal thickness and topography, pupil size, the tear film, eye pressure and the corneal endothelial cells. Expect to spend a good part of the day at the clinic, with an English interpreter on site to go through the results with you. For the first few hours afterward, dryness, light tearing and a gritty feeling are common. Rest that evening and keep your hands away from your eyes.

How long does LASIK recovery take before you can fly home?

Most people see clearly from the next day and return to daily life within one to two days. The first one to two weeks still need care: prescribed drops on schedule, no eye-rubbing, and no saunas, swimming or eye makeup for the period you're given.

The U.S. Food and Drug Administration's patient guidance on LASIK also describes a first follow-up visit within the first day or two after surgery, and that check is the one that shapes a travel plan. At Healing Eye, the same surgeon who operated sees you the next day.

Clinic hours matter here. We're open Monday to Thursday 10:00–18:30, Friday until 21:00, and Saturday 10:00–14:00, with lunch from 13:00 to 14:00 and no clinic on Sundays or public holidays. If surgery falls on a Friday, the next-day check has to fit into Saturday morning. A Saturday surgery would push the check past a closed Sunday, so it's worth building the calendar around that.

The clinic is one minute's walk from Sinnonhyeon Station and about 70 minutes from Incheon Airport. Our partner hotel is the O'Cloud Hotel in Seocho-gu. Exam and surgery can often happen on the same visit, though your eyes may call for some adjustment. Two numbers I won't give you from a blog post: how many days to stay and how long to leave your contact lenses out before the exam. Both are confirmed in consultation, because they depend on your lens type and what the exam shows.

Once you're home, temporary dryness is the most common thing people notice, and it's managed with artificial tears. The Clear LASIK treatment page lists the full recovery steps.

If you already have dates in mind, send them on WhatsApp together with a photo of your latest prescription. I'll tell you whether the exam, surgery and next-day check fit inside those dates, and what would change the plan, such as contacts worn too close to exam day.

Does LASIK wear off after ten years?

LASIK doesn't wear off like a coating. The excimer laser removes a precise amount of corneal tissue, and that tissue does not grow back, so the reshaping stays.

What people call "wearing off" is usually one of two things. The first is regression: in some eyes the cornea's surface layer remodels slightly over the months after surgery and pulls the result back a little. This tends to be more noticeable when a large correction was made. The second is that the eye under the correction keeps changing. If myopia was still progressing when surgery was done, the eye can drift toward nearsightedness again, and the laser had nothing to do with it.

That is why the year-old prescription matters as much as today's. A prescription that has barely moved over the past year or so is one of the conditions I look for before recommending LASIK at all. High prescriptions get extra scrutiny, which is covered in more detail in how strong a prescription LASIK can reasonably handle.

Your eyes keep aging after LASIK

LASIK corrects the shape of the cornea. It does nothing to the lens inside the eye, which ages on its own schedule.

In your 40s, the lens slowly loses its ability to change focus. That's presbyopia, and it's why many people who had LASIK at 25 start holding their phone further away at 45. Their distance correction is still there; the near focus is what changed.

Later on, the lens itself clouds. The U.S. National Eye Institute describes cataracts as very common with age, and having had LASIK doesn't prevent them. If you need cataract surgery decades from now, tell that surgeon you had LASIK, because the earlier reshaping affects how the replacement lens power is calculated. Keeping a copy of your surgical records helps.

For people with a very strong prescription who want to keep corneal tissue intact, a lens implant is another route with its own timeline, explained in how long an ICL lasts.

Which side effects and eye conditions make a result less likely to hold?

Some eyes are better served by a different procedure, or by waiting. These are the situations where I'd steer away from flap-based LASIK or ask you to postpone:

• A thin cornea, or topography showing irregularity or signs of keratoconus. LASEK or an implantable lens (ICL) is usually the safer comparison.
• A prescription that is still changing.
• Significant dry eye, pregnancy or breastfeeding, where timing may need adjusting.
• Contact sports or work with frequent strong impact to the eye, where a flapless method may suit better.

The FDA's own page on when LASIK may not be appropriate lists similar cautions, including an unstable prescription and conditions that affect healing.

As for side effects, early dryness and nighttime glare or halos can occur and usually ease with time, but eyes differ, so regular check-ups still matter. If you're sensitive to glare at night, Personal Custom LASIK analyses higher-order aberrations with night vision in mind; whether it adds anything for your eye is something the measurements show. The longer list of what can persist is in LASIK side effects over the long term. Candidacy itself is settled at the in-person exam, not before it.

If your vision does drift back

A drift after LASIK can sometimes be treated with a second laser procedure, provided enough cornea remains under the original flap. That residual thickness is the number that decides it.

Healing Eye runs a dedicated LASIK and LASEK revision center for people whose vision declined or became uncomfortable after earlier surgery, including surgery done elsewhere. The clinic also operates a lifetime surgical-responsibility program. Neither changes the biology described above: an eye that ages will still age. They do mean the follow-up question has somewhere to go. If you read Korean, or want to show a family member, the revision service is also described on our Korean-language revision page.

If you had LASIK years ago and your vision has slipped, or you're considering it with a strong prescription, start with one message on WhatsApp: a photo of your current prescription and, if a clinic at home measured it, your corneal thickness. I'll tell you which of the options above those numbers point to, and roughly how many days in Seoul to plan for.