You can get LASIK from age 18, since the FDA notes no lasers are approved for anyone younger. After that, a prescription that has held steady for a year matters more than age, and from your 40s presbyopia and lens health change which procedure fits.
Age by age: what usually decides the answer
Why is 18 the minimum, and why might a surgeon still say wait?
What changes after 40?
Is there an age when LASIK stops making sense?
What does the exam look at besides your age?
Planning a Seoul trip around your age and your exam
What decides the cost of LASIK in Korea?
Risks that shift with age
What to send, depending on your age
Wondering what age can you get lasik, and whether your age could count against you?
Read on before you book or decide anything.
You will come away knowing the minimum age, what changes after 40, what the exam checks besides age, and how to plan a Seoul trip around it.
Hello, I'm Dr. Baek Dong-won, Representative Director of EYEONCE.
EYEONCE is a Seoul-government-registered clinic for international patients, with in-house interpreters in English, Chinese, Mongolian and Thai. Lifetime aftercare means you can contact us at any time after surgery for a detailed re-examination.
Many people write to me assuming there is one cut-off age, when your prescription history and the health of your eyes usually matter more.
The short answer is 18, the minimum age for LASIK. After that, a prescription that has stayed steady for about a year and the condition of your eye's natural lens decide most of it.
Age is a rough stand-in for three questions about your eye: is the prescription still moving, is the focusing lens stiffening, and is that lens starting to cloud. Here's how those questions line up with the decades.
| Age | The question that usually decides | What's typically discussed |
|---|---|---|
| Under 18 | No lasers are approved for LASIK under 18 (FDA) | Glasses or contacts for now |
| 18 to mid-20s | Has the prescription held steady for a full year? | LASIK, LASEK or SMILE LASIK once stable |
| Mid-20s to about 40 | Corneal thickness, prescription size, dryness, lifestyle | LASIK, LASEK, SMILE LASIK or ICL |
| About 45 to 55 | Is close-up vision starting to slip? | Several options may apply, including presbyopia correction |
| 50s and up | Is the natural lens starting to cloud? | Cataract screening and lens-based options |
The last two rows overlap on purpose. Between 45 and 55, several options may apply, and that's the band where a personalized exam matters most. If you want to see how the flapless laser differs from LASIK before you get there, our SMILE LASIK explainer walks through it.
Eighteen is the regulatory floor; a stable prescription is the medical one. The FDA lists people in their early 20s or younger among those more likely to have refractive instability, and it treats a change in your glasses or contact lens prescription within the past year as a sign of it.
The reasoning is easy once you picture what the laser does. LASIK reshapes the cornea to match the prescription measured on the day. If a nearsighted eye is still lengthening, as it often does into the early twenties, the prescription keeps moving after surgery and some of the nearsightedness can return.
That's why the textbook reply to what age can you get lasik, 18, is only half the answer. Your old prescriptions carry as much weight as your birth date.
Hormonal shifts can unsettle a prescription too. The same FDA page lists people who are pregnant or breastfeeding among those more likely to have refractive instability, so anyone planning a family usually times surgery around it. And a large prescription narrows the options at any age; our guide to high myopia with astigmatism covers that side.
Your distance prescription can still be corrected after 40, but a second change starts arriving: presbyopia. The American Academy of Ophthalmology describes it as the gradual loss of the ability to see things up close, a normal part of aging that many people first notice shortly after 40.
People in their 40s are sometimes surprised by the mechanics. LASIK works on the cornea, while presbyopia comes from the natural lens behind it losing flexibility. A laser can make distance sharp again, and you may still reach for reading glasses within a few years.
Some people choose to have one eye set slightly for near vision (often called monovision); others prefer full distance correction plus readers. That trade-off is worth trying out before surgery, often with contact lenses, because some people adapt to it and some never do. EYEONCE lists presbyopia correction as its own procedure, separate from LASIK, which is why the 45-to-55 conversation tends to cover more than one option.
Say you are 43 and have worn glasses for distance since your twenties. Lately you hold menus at arm's length, and your prescription has not changed in several years. I would not look at the number 43 on its own. I would want to know how your distance and close-up vision work together today, whether your corneas and tear film are healthy, and how you feel about reading glasses in your late 40s. Together those tell me whether a laser procedure fits you or whether another option deserves a look. With a clear picture of your priorities, the decision is easier to make.
No birthday rules LASIK out; the turning point is usually the lens. The National Eye Institute notes that most cataracts are related to aging. Once the natural lens starts clouding, reshaping the cornea in front of it does nothing for the clouding.
Cataracts usually develop from the 50s–60s onward, and screening is recommended from your 50s, or earlier if you notice glare, halos or clouding. For people who want the broadest freedom from glasses, a trifocal or extended-depth-of-focus (EDOF) lens implant can address cataract and presbyopia in the same surgery.
So someone in their late 50s who asks about LASIK may leave the exam talking about lens options instead. The exam makes that call by looking at the lens itself, and the age on your passport only tells the surgeon where to look first.
A surgeon typically reads them together:
ICL deserves a mention for people in their 20s and 30s who are told their cornea is too thin. The EVO Aqua ICL sits inside the eye and can be removed or exchanged if your needs change later, which matters when you still have decades of changes ahead.
As co-author of the Textbook of Dry Eye (2019), I'd ask you not to skip the tear-film part of any consultation. An eye that's already dry at 45 is a different starting point from the same prescription at 25, even when the numbers on the glasses look identical. The question worth bringing to any clinic is less "am I old enough" and more "has my prescription stopped moving, and is my lens still clear."
For laser vision correction, a stay of about 3–5 days is typical. If your exam results are suitable, exam and surgery can often happen the same day, with a next-day check-up before you fly home. ICL and lens procedures, which come up more often after 45, usually call for 5–7 days.
A few practical points that shape the dates:
If you're curious what the first weeks back at work feel like, our SMILE LASIK recovery guide goes day by day.
If your trip has fixed dates, send them on WhatsApp with the type of contact lenses you wear. The team builds the schedule around those dates, including the lens-free days before the exam and the next-day check before your flight.
The cost depends on the method you are suited to, such as LASIK, LASEK, SMILE LASIK or SMILE PRO, since each is a different procedure. It also depends on your prescription and corneal thickness, which affect which methods are open to you. Days in Korea matter too: laser vision correction usually takes about 3-5 days including a next-day check-up, while ICL and lens procedures usually need 5-7 days. Your age plays a part mainly through what the exam finds, for example whether reading vision has started to change. To get the figure for your own case, send a photo of your glasses prescription on WhatsApp and ask there.
Every age band carries the standard LASIK risks; what changes is which ones matter most to you. According to the FDA's guide to what to expect after surgery, discomfort, hazy vision, glare, halos and dry eyes are possible in the early days and months.
By decade, the emphasis moves:
The FDA also lists situations where LASIK may not suit you at all, such as an unstable prescription or being pregnant or breastfeeding. Results and recovery differ from person to person, and whether you're a candidate is decided at the in-person exam.
Send one photo of your current glasses prescription, plus an older one if you have it, on WhatsApp, together with your age and rough travel dates. You can ask before you book anything. When you come to Seoul, I examine your eyes and recommend what fits you.
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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