How Long to Stay in Korea for Eye Surgery — A Surgeon's Day-by-Day Answer

"Just tell me how many days to book."

It is the most practical question international patients ask me, and the honest answer is that how long to stay in Korea for eye surgery depends on which procedure you end up having — and we do not know that until the exam. What I can give you is the day-by-day structure for each one, so you can book with the right amount of room.

The three fixed points

The exam (morning). Corneal thickness, topography, tear film, pupil size in low light, and a dilated retinal check. This takes a few hours, and your pupils stay dilated afterwards, so do not schedule anything that needs sharp vision for the rest of the day.

The surgery (afternoon). For LASIK and Clear SMILE LASIK it usually follows the exam the same day. The procedure itself takes minutes. You will be at the clinic longer for preparation and a short rest afterwards, and you will not see clearly for the rest of that day.

The check-up day. The morning after surgery. This is the appointment that matters most — it confirms the cornea is settling (and, after LASIK, that the flap is seated), there is no unusual inflammation, and the eye is healing as expected. It is also the appointment that clears you to fly.

By procedure

"Minimum" assumes everything goes as planned. "Comfortable" is what I would book myself.

Surface ablation is the outlier. There is no flap; the surface heals over, and a protective contact lens stays in place while it does. That lens has to come out before you fly, and the healing takes several days rather than one. If your prescription or corneal thickness points toward LASEK, plan for a week.

ICL has a lead time, not a longer trip. The lens is manufactured to your measurements. Either your exam happens on an earlier visit, or we work from measurements sent ahead and confirm them on arrival. The trip itself has the same three fixed points as the LASIK trip.

What actually extends a trip

Three things, in order of how often I see them.

The exam finds something. Dry eye that should be treated first, a cornea too thin for the laser, an irregular topography that rules out laser entirely. None of these are rare. Sometimes the answer is a different procedure; sometimes it is a course of treatment and a second trip.

Both eyes, spaced apart. Most people have both eyes done the same day. Some prefer a few days between them, and for lens-based surgery there are cases where I suggest it. That adds days.

A slower start. Healing is not identical in everyone. Occasionally I want to see someone again before clearing them to fly.

I write this not to alarm you but because a trip with no slack in it turns a normal finding into a crisis. The detailed day-by-day plan covers each scenario.

Before you book the flight

Two things will change your plan more than anything else, and both are decided before you arrive.

Stop wearing contacts. Soft lenses for at least a week before the exam, rigid lenses for longer. Lenses press on the cornea and change its shape; measuring through that gives a false reading, and surgery designed on a false reading is not surgery I will perform. If you arrive having worn lenses the day before, we lose days waiting for your cornea to settle.

Send your prescription ahead. It lets us tell you which procedures are plausible and roughly how long to plan for, before you spend money on tickets. It is not a substitute for the exam, but it stops you booking one night when your prescription suggests you may need seven. How to arrange all of this from abroad walks through the steps.

Flying home

The rule is not a number of days. It is an examination.

For LASIK and Clear SMILE LASIK, patients are usually cleared the morning after surgery. For surface ablation, it is after the protective lens comes out. Cabin air is dry and will make your eyes feel worse than they are — bring the drops in your carry-on and use them through the flight. More on flying after surgery.

The Korean head office page on vision correction lists the same procedures and recovery timelines we use for domestic patients. The schedule is not different because you flew in.

Honestly

I would rather you booked one night more than you need than one night fewer. The extra night costs you a hotel. The missing night costs you a changed flight, or worse, a decision made in a hurry about your eyes.

And if the exam says no — if your cornea is too thin, or your tear film needs months of work first — I will tell you that, even though you flew here. A trip that ends without surgery is not a wasted trip. Surgery done on an eye that was not ready is a different kind of loss.

— Dr. Kim Sun-young, Healing Eye Clinic, Gangnam, Seoul