Can you go blind from lasik? Total blindness is extremely rare. The FDA's documented risk is losing some sharpness that glasses can't fully restore, and screening the cornea before surgery aims to prevent it.
What does “going blind” mean after laser eye surgery?
Common and temporary: what most people deal with
What decides the cost of LASIK or SMILE LASIK in Seoul?
Which rare complications can vision?
Screening is where most of the risk is removed
Can you go blind from lasik years later?
If something goes wrong after you fly home
Can you go blind from lasik, or is that fear bigger than the real risk?
It is worth reading to the end before you book or decide anything.
After reading, you will know what "going blind" actually means after laser eye surgery, which rare complications can affect sight, what decides the cost, how the LASIK and SMILE LASIK methods differ, and what review threads claim compared with medical fact. That should help you decide whether to go ahead and what to ask first.
Hello, I'm Dr. Baek Dong-won, Representative Director of EYEONCE in Gangnam, Seoul.
At EYEONCE the same surgeon handles diagnosis, surgery and follow-up. Lifetime Aftercare means you can contact the clinic at any time after surgery for a detailed re-examination and, where appropriate, re-treatment support. Interpreters are on-site in English, Chinese, Mongolian and Thai, so language is not a barrier.
I wrote this because many people read one alarming forum post and assume the worst outcome is common.
The short answer: total blindness after LASIK is extremely rare. The risk that is actually listed is smaller and more specific, a loss of sharpness that glasses or contacts cannot fully correct, and careful screening before surgery lowers it.
Two different outcomes get blended in that phrase. Total loss of sight from LASIK is rarely reported.
The anatomy explains the gap between the two. LASIK, LASEK and SMILE LASIK all reshape the cornea, the clear front window of the eye. None of them operates on the retina or the optic nerve, where the conditions that most often cause blindness develop, such as glaucoma, retinal detachment and macular disease. When sight is lost after corneal surgery, the cause is usually the cornea healing poorly: scarring, infection, an irregular surface or a damaged flap.
One consequence for high prescriptions: laser surgery corrects how the eye focuses, not how long the eyeball is. A strongly nearsighted eye keeps its own retinal risks after LASIK, so regular dilated checkups still matter. Our page on how high myopia and astigmatism are assessed together walks through how those numbers interact.
Dryness, glare and a few weeks of shifting focus are the realistic downsides, and they are much more common than any threat to sight. EYEONCE's aftercare guidance treats temporary haziness during the first 1 to 3 months as a normal part of the cornea healing.
For the day-by-day version instead of the risk list, the SMILE LASIK recovery timeline for daily life covers work, screens and sleep.
The cost depends on your eyes more than on the label of the procedure. The method matters first: LASIK, LASEK and SMILE LASIK are different techniques, and your cornea thickness and shape determine which of them is suitable. The strength of your prescription and any extra findings from the exam, such as dryness or astigmatism, also affect the plan. The number of days you stay in Korea matters too. Laser vision correction usually takes about 3 to 5 days, with a check-up the next day, and the follow-up arrangements are part of the picture. To get the figure for your own case, send a photo of your prescription on WhatsApp and ask for it there.
Four problems account for most serious cases: infection, severe inflammation, flap complications after LASIK, and corneal ectasia. Each is uncommon, and each has either early warning signs or a pre-surgery measurement that makes it less likely.
| What you notice | How it usually behaves | What to do |
|---|---|---|
| Dryness, grittiness, mild blur | Common; eases over weeks to months | Keep using prescribed drops and artificial tears |
| Halos around lights at night | Common early; often fades as the cornea settles | Mention it at your follow-up |
| Foreign-body sensation or pain | Not expected | Visit the clinic right away, or see a local ophthalmologist first and then contact EYEONCE |
| Vision getting worse, redness rising | Not expected | Same day: an eye doctor, then a message to the clinic |
Most serious complications are avoided at the exam, by finding eyes that shouldn't have a given procedure. The FDA's guidance on who is probably not a good LASIK candidate includes people whose prescription is still changing, people with diseases or medicines that affect healing, and people with thin corneas, large pupils or dry eyes.
What a surgeon reads on the results: corneal thickness at its thinnest point, whether the topography map shows an even curve or a patch of localized steepening that can signal a weaker cornea, how much tissue the planned correction would remove, and how stable the tear film is. A thin or irregular cornea usually moves the plan toward a surface procedure, a lens implant, or no surgery at all.
At EYEONCE, measurements are taken on Topcon diagnostic equipment, and the clinic's stated rule is that surgery goes ahead only if the pre-op precision exam confirms you are a suitable candidate. LASEK can be preferable for thinner corneas, and ICL is an option for high myopia, thin corneas or dry eyes.
If you're comparing procedures by cornea type, who LASEK is suited to and how SMILE LASIK differs from flap-based surgery go further into the trade-offs.
Having co-authored the Textbook of Dry Eye (2019), I take the dryness question as seriously as the dramatic ones. Dryness is far more likely than vision loss to shape how your eyes feel in the first months, and a tear film that is already unstable before surgery is a reason to slow down. When the measurements say a particular procedure carries more risk for your cornea, “not this one” is a legitimate outcome of the exam.
Say you are 29, your prescription is moderately strong, and a doctor at home once told you your cornea is "a bit thin" and you have read forum threads saying LASIK can leave people blind. I would not start from the threads, which tend to describe the rare bad outcomes and leave out the many uneventful ones. I would start from your corneal measurements, your dry-eye history and how your cornea is shaped. Those results decide whether LASIK, LASEK or SMILE LASIK is a reasonable method for you, or whether surgery should wait or not happen at all. The fear gets replaced by a specific question about your eyes.
Late problems are uncommon. Ectasia, the late complication that can threaten sharpness, is exactly what pre-surgery thickness and topography screening is designed to catch.
A 2016 study in the Korean Journal of Ophthalmology examined which factors were linked to long-term myopic regression after LASIK and LASEK for moderate myopia. Regression blurs distance vision again, but it is a focusing problem: glasses correct it, and some eyes can have an enhancement.
One habit worth keeping for life: tell every eye doctor you see that you've had corneal surgery. It changes how eye pressure readings and, decades later, cataract lens calculations should be interpreted.
See an eye doctor where you are, then contact the clinic. That is the order EYEONCE's own aftercare guidance gives for a foreign-body sensation or pain: visit right away while you're in Seoul, or see a local ophthalmologist first once you're home and then get in touch.
Before you leave Seoul there is a next-day check-up. After that come the rules that protect a healing cornea: don't rub your eyes, wear the protective shields while sleeping in the early days, skip swimming pools, saunas and steam rooms for about a month and eye makeup for about two weeks, wear sunglasses outdoors (especially after LASEK), and use every prescribed drop as directed.
Lifetime Aftercare covers the longer horizon. If you notice a problem at any point, you contact the clinic, a detailed re-examination assesses the eye, and re-treatment is supported where appropriate. Advice from the U.S. Centers for Disease Control and Prevention for medical travelers fits here too: carry copies of your records home so a local doctor can see what was done. For the wider pre-booking checklist, see what to check first when considering LASIK in Korea.
If you're still deciding, send a photo of your latest glasses prescription or eye exam report on WhatsApp together with your travel dates. EYEONCE has in-house interpreters for English, Chinese, Mongolian and Thai, and the team builds the exam, surgery and next-day check around the dates you give.
One concrete last step: write down the exact phrase a doctor at home used about your eyes, such as "thin cornea", "irregular astigmatism" or "dry eye", and send it on WhatsApp with a photo of your prescription and the dates you could travel. Ask one question, for example whether that finding rules out LASIK for you. When you come to Seoul, I examine your eyes and recommend what fits them.
Results and suitability vary by individual. Your procedure recommendation is confirmed only through an in-person diagnostic exam.
Representative Director · Former Clinical Instructor, Dept. of Ophthalmology, Samsung Seoul Hospital · Member, Korean Society of Cataract and Refractive Surgery · Member, American Society of Cataract and Refractive Surgery
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