Can You Get LASIK Twice? Five Beliefs About a Second Round

Many people believe LASIK can only be done once in a lifetime. To the question “can you get lasik twice,” the answer is that a second laser treatment is often possible, as long as enough cornea remains under the original flap and your prescription has stayed steady. If not, LASEK or a lens implant (ICL) may be the safer route.

I'm Dr. Kim Sun-young, Medical Director of Healing Eye Clinic in Seoul, and whether you can get lasik twice is something I only decide after a detailed exam of your corneal thickness and topography, because that shows how much safe cornea is left.

If you're planning this from abroad, the extra worry is follow-up: a second round means a detailed exam and a next-day check, so I'd suggest allowing a few days for both.

If your LASIK was years ago and the blur has crept back, have your current glasses prescription, the year of your first surgery and the country where it was done ready when you call us at +82-2-566-1222. Those three details help decide which measurements matter most when you're examined in Seoul.

Is LASIK really a once-in-a-lifetime surgery?

There is no rule that LASIK can only be done once. The real limit is tissue. Every laser treatment removes a little cornea, so a second one is only reasonable if enough remains to keep the cornea strong.

The belief does have some truth in it. The FDA notes that no laser company has presented it with enough evidence on the safety and effectiveness of enhancement surgery. Its list of reasons LASIK may not be for you also includes previous refractive surgery. Put more accurately: a second round is possible, but it isn't automatic, and it needs its own careful review.

The deciding measurement is the residual stromal bed, which is the layer of cornea left under the flap after the first treatment. It is measured rather than estimated. That's why your current corneal thickness and a new topography map matter more than anything written about your eyes years ago.

The belief that returning blur means the first surgery failed

Some short-sightedness slowly returning is a recognized pattern after laser surgery.

The same study suggested that regression seen early, in roughly the first year, may hint at the long-term course. That's a good reason to keep your old records and compare them. If your prescription has drifted a little over a decade, the eye may simply have changed, and what matters now is whether it is stable. Our post on LASIK enhancement and regression covers this pattern in more detail.

Isn't a second LASIK simply the first one repeated?

Usually not exactly. A second treatment is planned from your eye as it is today. That means how thick the cornea is now, where the old flap sits, how regular the surface looks on topography, and how much prescription is left to correct.

The exam before LASIK at Healing Eye covers corneal thickness and topography, pupil size, tear film, intraocular pressure and the corneal endothelial cells. In a second round, topography matters even more. A subtle irregularity or a pattern suggesting keratoconus moves the conversation away from more laser and toward LASEK or an ICL, which is placed inside the eye and leaves the cornea untouched. The clinic's excimer laser is the AMARIS Red.

What you bring matters too. The original surgery report, with the pre-op prescription, corneal thickness and, if listed, the flap depth, helps whoever examines you next. If you can't get the report, the year, the country and the clinic's name are still useful. If you're comparing an ICL with more laser, how I decide between ICL and LASIK explains the reasoning.

The belief that reading glasses at 45 mean the LASIK wore off

Trouble reading up close in your 40s is usually presbyopia, which happens whether or not you had LASIK. The American Academy of Ophthalmology describes it as the age-related loss of the eye's ability to focus up close. A second distance treatment won't fix it.

This mix-up is common in this age group. If your distance vision is still sharp but you now hold your phone at arm's length, your old LASIK doesn't need redoing. Later in life, a developing cataract can also blur vision, as the National Eye Institute explains. That problem sits in the eye's lens, so more corneal laser won't help. The exam works out which of these is causing the blur.

Who shouldn't have a second laser treatment?

A second laser treatment is a poor idea if the cornea is too thin, the prescription is still changing, the topography looks irregular, or dry eye is already significant. The FDA warns that refractive surgery on a cornea that is too thin may result in blinding complications, and that LASIK tends to make dry eye worse.

Risks and side effects to know

The usual after-effects can come back with a second round. The FDA describes burning, itching or a feeling that something is in the eye right after LASIK, along with hazy vision, light sensitivity, glare, starbursts and halos. Vision can take three to six months to stabilize, and night-driving difficulty may last during that time. Surface treatments heal more slowly in the first days, and the American Academy of Ophthalmology's EyeWiki entry on LASEK discusses corneal haze as a possible complication.

If dryness is already a problem for you, read whether LASIK is possible with dry eyes before planning a second round.

Sometimes the answer is no, and glasses, contact lenses or an ICL are the better fit.

If you use drops for dryness every day, or you've been told your cornea is thin, mention it in your WhatsApp message and add a photo of any recent eye report. Those two facts change the plan more than almost anything else, and it's better to raise them before you book a flight.

The belief that one clinic can't treat another clinic's LASIK

In short, it can. Healing Eye runs a dedicated LASIK/LASEK revision center for patients whose vision declined or became uncomfortable after surgery elsewhere. The first step is working out the cause, which could be regression, an unstable surface, dryness, or something unrelated to the first surgery.

Revision has no standard timetable. The clinic's LASIK/LASEK revision page notes that the length of the procedure is decided after a detailed exam and recovery varies by case. Forum threads about second rounds are full of strong opinions, and LASIK in Korea on Reddit covers how to weigh them.

How does a second treatment fit into a trip to Seoul?

Plan for the exam, the treatment, and at least one check within 24 to 48 hours afterwards, which the FDA describes as standard after LASIK. The exact number of days is confirmed at your consultation, since surface treatments take longer to settle than flap-based ones.

A few practical details help. The clinic is a one-minute walk from Sinnonhyeon Station. It's open until 21:00 on Fridays and from 10:00 to 14:00 on Saturdays, and closed on Sundays and public holidays.

The FDA also recommends follow-up at regular intervals for at least six months, so ask how those later checks will work once you're home.

That's the quickest way to move from the general question “can you get lasik twice” to one about your own cornea.