SMILE vs LASIK in Korea: Choosing When You're Flying In

I'm Dr. Kim Sun-young, medical director of Healing Eye Clinic in Sinnonhyeon, Gangnam, Seoul. I was a clinical professor of cornea and cataract surgery at a university hospital, and every week I see patients who planned a short trip around their eyes, with an English interpreter in the room from the first test onwards.

The question usually comes with a calendar attached: "Dr. Kim, I have five days in Seoul and I play rugby. SMILE or LASIK?"

If you're searching smile vs lasik korea, you probably already know the textbook difference. What you want to know is how it plays out when you're flying in, on a fixed number of days, with your own sport, job and dry eyes.

So here's the honest version first: for a visitor, the trip barely separates SMILE from LASIK. Your cornea and your life do. Here are the four questions I actually use.

SMILE vs LASIK in Korea: four questions that decide it

The basics in one line each. LASIK lifts a thin corneal flap, reshapes the tissue underneath, and lays the flap back. SMILE has no flap: a lens of tissue is shaped inside the cornea and removed through a 2–4mm opening.

1. How many nights do you have?

This is the question everyone thinks matters most, and it matters least. Both need at least three nights: exam, surgery, next-day check. I recommend four.

With either one, most people manage daily life the next day. If your window is shorter than three nights, the answer isn't SMILE or LASIK — it's a later trip.

2. Does your eye take knocks?

Here SMILE pulls ahead. A LASIK flap edge stays in the cornea for life, and rarely a strong blow can affect it.

Rugby, martial arts, military or police work, a toddler's elbow: if impact is part of your life, I lean towards no flap. That means SMILE, or LASEK if your cornea is thinner.

3. Are your eyes already dry?

SMILE disturbs fewer corneal nerves, so dryness afterwards tends to be milder. If you already reach for drops in air-conditioned offices, that counts.

But a truly unstable tear film needs treatment before either procedure. A long flight home with freshly operated, dry eyes is a reason to get this right.

4. What does your cornea allow — and do you want a fixed price?

LASIK can handle a wider range of prescriptions, including some farsighted and presbyopic corrections. SMILE is at its best for moderate myopia on a healthy, thick-enough cornea.

There's also a practical difference: our LASIK prices are fixed and published, while SMILE is quoted after the exam.

The general, non-travel comparison is in my earlier post on SMILE vs LASIK, which is better. Who SMILE suits in the first place is in the SMILE LASIK Korea surgeon's guide.

Why I decide it with you, not for a brochure

At our clinic, the doctor who examines you is the doctor who operates and the doctor who checks you the next day. The choice between SMILE and LASIK is made by the person who measured your cornea.

What you can verify: international patients pay the same price as Korean patients, we hold 4.8 stars from 154 Google reviews, and I'm a full member of ESCRS, the European Society of Cataract and Refractive Surgeons. I give you these to check, not to impress.

So which one fits someone like me?

A rough guide. Your exam has the final word.

Price. Our Premium LASIK package is ₩1,990,000 for both eyes and Clear LASIK is ₩2,700,000. SMILE is quoted after the exam, which is ₩150,000. Why SMILE has no fixed number is explained in SMILE LASIK surgery cost in Korea; the full list is on the price page.

Side effects of both, and who should wait

Neither procedure is free of risk, and I'd rather you hear the downsides from me.

• Temporary dryness after both, usually milder after SMILE.
• Night glare and halos, more likely with large pupils, usually easing as the eye heals.
• Residual prescription, possible with either; enhancement after SMILE works differently from a LASIK touch-up.

I'd ask you to wait, or choose ICL or LASEK, if your prescription is still changing, your cornea is thin or irregular, or there's any sign of keratoconus. If dryness is your main worry, the Korean head office describes its dry-eye clinic, which is where we start when the tear film isn't ready.

Planning the trip for either one

• At least three nights, four recommended, for SMILE or LASIK alike.
• A changeable flight: the exam can switch the procedure.
• Stop contact lenses first: at least one week for soft lenses, longer for rigid ones.
• No swimming, sauna or eye makeup for about a week after surgery.
• We're one minute from Sinnonhyeon Station, about 70 minutes from Incheon Airport.
• After you fly home, one-week, one-month and three-month checks can be done locally with the written record we give you.

What the SMILE day itself feels like is in SMILE eye surgery in Korea, step by step.

Don't pick the procedure yet — pick the exam date

Arrive with a preference, by all means. Just don't arrive with a decision.

It doesn't have to be our clinic. But choose one where the surgeon who reads your corneal map is the one who operates, and will tell you if your preference is the wrong one.

Send your prescription, age, sport or job and travel dates on WhatsApp. If neither SMILE nor LASIK suits your eyes, I'll tell you plainly and explain what does.

I hope to see you in Seoul.

— Dr. Kim Sun-young, Medical Director, Healing Eye Clinic (Sinnonhyeon, Gangnam, Seoul)