LASIK in Korea vs Singapore: who checks your eyes after you fly home?

LASIK reshapes the cornea under a thin flap, LASEK reshapes the surface without a flap, and SMILE-type surgery removes a small lens-shaped piece of tissue through a small incision, as Reinstein and colleagues describe in their review of the technique in Eye and Vision (2014).

For a traveler, the choice between them mostly shows up in the first weeks. A LASIK flap is generally protected from rubbing and knocks while it settles, LASEK's surface takes some days to heal and is often more uncomfortable at first, and SMILE LASIK leaves no flap, only a small incision. Which one suits you depends on your corneal measurements, not on your flight dates.

The candidacy rules are also the same in both countries. A stable prescription, enough corneal thickness, a healthy tear film and no active eye disease are what an ophthalmologist checks anywhere. If a surgeon in Singapore has measured your corneas and said LASIK isn't a good idea, assume a surgeon in Seoul will measure the same cornea and reach a similar conclusion. What can differ is whether another procedure fits, such as LASEK or a lens implant.

So it helps to know what's in the room. My clinic uses a Ziemer FEMTO Z8 femtosecond laser, a WaveLight EX500 excimer laser, Topcon diagnostic equipment, and EVO Aqua ICL (CentraFLOW) lenses for eyes that aren't suited to laser surgery. Whichever city you choose, ask for that list by model name, and make sure the person operating is an ophthalmologist rather than an aesthetic clinic doctor.

Plan around three fixed points: a contact-lens break before the exam, the exam and surgery, and a first check one to two days later. The FDA's patient guidance on LASIK describes that first follow-up visit 24 to 48 hours after surgery, so the flight home belongs after it.

The lens break is what most often upsets a trip. Contact lenses change the shape of the cornea slightly, which is why the same FDA guidance asks people to stop wearing them for a period before the baseline exam, and longer for soft toric, rigid gas permeable and hard lenses. Wear lenses on the plane and the topography (the map of your corneal surface) may not show your real cornea, and the measurements may have to wait.

Then the calendar. My clinic is open Monday, Tuesday, Thursday and Friday from 09:00 to 18:00 and Saturday from 09:00 to 16:00, with lunch from 13:00 to 14:00. It's closed on Wednesdays and Sundays, appointments are required, and registration may close early on busy days. A Saturday surgery can't have its next-day check on Sunday, and a Tuesday surgery pushes the first check to Thursday. Lay the trip out so that check lands on an open day.

The clinic is at 5–6F, Duo Sinnonhyeon, 368 Sapyeong-daero, Seocho-gu, and the website explains the routes from Incheon Airport by taxi, by AREX plus subway, and by airport limousine bus. For a longer walk through the Korea side of the trip, see what to check first for LASIK in Korea.

Often yes for distance vision, but LASIK doesn't stop presbyopia, the age-related stiffening of the eye's own lens that makes small print harder. Most people who have distance correction in their 40s will reach for reading glasses at some point. That's true in Seoul, Singapore or anywhere else.

So the over-40 conversation has more branches than the under-30 one. Full distance correction with readers later is one path. Monovision, where one eye is set slightly for near, is another, and it's usually trialed with contact lenses first because some people never adjust to it. When the eye's own lens is already changing, lens-based options come into the discussion; my clinic also offers presbyopia correction and cataract surgery with premium IOLs.

What tends to make a surgeon hesitate at 45 or 50 is often in the lens rather than the cornea. Early clouding seen at the slit lamp, or a prescription that has drifted more nearsighted over a couple of years, can be signs of early cataract change. Reshaping the cornea in that situation may simply be followed by cataract surgery a few years later, so it's a fair moment to ask whether the laser is the right first step.

Tears matter more with age as well. The tear film tends to thin over time, and laser surgery can make eyes drier for a while afterward.

Dry eye is the subject of a textbook I co-authored, the Textbook of Dry Eye (2019), so it's the part of an over-40 exam I'd least like anyone to skip. A tear film that breaks up quickly doesn't automatically rule out surgery, but it changes which procedure makes sense and what the first months will feel like.

If you live in Singapore and want your surgeon close for every visit, have surgery there. Singapore's ophthalmologists work with the same science, and a surgeon twenty minutes away can see you the same day during the first six months.

The same goes if you already have an ophthalmologist who has followed your eyes for years, or if you can only spare a couple of days and none of them fall on clinic days. Seoul tends to make more sense when you live somewhere both cities mean a flight, when you're spending time in Korea anyway, or when you'd like the first conversation in Chinese, Mongolian or Thai as well as English. The broader picture of planning eye surgery in South Korea is on a separate page.

Still weighing the two? Send a photo of your latest eye exam report or prescription to our English consultation team on WhatsApp, with your age, lens type and possible travel dates, so the conversation starts from your actual numbers. Staying close to home remains a valid outcome. The clinic's main page has the WhatsApp link as well.