LASIK Surgeons Should Measure First and Talk Surgery Second

I'm Kim Sun-young, an eye surgeon in Seoul, and I think two sentences LASIK surgeons should be ready to say in a consultation are "not yet" and "not LASIK."

If you're comparing LASIK surgeons from abroad, look for that first: a surgeon who measures your eyes before recommending anything, explains the numbers to you directly, and is willing to send you home without a surgery date. Device names and clinic photos matter less than that. If you have three clinic tabs open and a spreadsheet next to them, here is what your exam day should contain, what you'll be asked, and what you should ask back.

Where does most of a LASIK surgeon's work happen?

Clear LASIK itself takes about 10 minutes for both eyes. The decision about whether you should have it at all rests on measurements taken beforehand, and on how the surgeon reads them.

LASIK works by creating a thin flap in the cornea, lifting it, and using an excimer laser to reshape the tissue underneath so light focuses properly on the retina. The flap is then laid back down. That means the surgeon has to answer one question before anything else: after the flap and the reshaping, what thickness of cornea is left, and is the cornea's shape even enough to stay stable? Everything on exam day feeds that answer.

The measurements that belong on your exam day

A LASIK exam should cover the shape, thickness and surface of the cornea, plus the eye around it.

What makes a surgeon hesitate is often a combination, not a single number. A cornea of adequate thickness can still worry a surgeon if the topography map is uneven between its upper and lower halves, because uneven steepening can be an early sign of keratoconus or a cornea prone to bulging (ectasia). A slightly thinner cornea with a regular map is sometimes less of a concern. That is why a thickness figure on its own, quoted over email, tells you very little.

If you drive at night a lot, ask whether higher-order aberrations will be measured. Those are the small optical irregularities a standard prescription test misses, and they are what Personal Custom LASIK is designed around, with night vision and contrast sensitivity in mind.

Contact lenses temporarily change the shape of the cornea, which is why the U.S. Food and Drug Administration advises stopping them before the baseline exam. How many days you need depends on your lens type, and we confirm that with you at consultation.

Exam results, explained by the surgeon who operates

The surgeon who will operate on you should be the one explaining your results. In my clinic, one dedicated surgeon follows each patient 1:1 from the exam through surgery and the follow-up visits, and results are reviewed together with an on-site Japanese, Traditional Chinese or English interpreter.

The topography map is reviewed together with you, looking for irregularity or signs of keratoconus. I also ask about things patients don't expect: your job, whether you often drive at night, and whether you do contact sports. Those answers change the recommendation as much as the numbers do.

Six questions to ask any LASIK surgeon

Ask questions that force a specific answer about your own eyes. These work at any clinic, including mine:

1. Which of my numbers is the limiting one? A good answer names a measurement, not a reassurance.
2. What corneal thickness will remain after treatment, and are you comfortable with that? You want a clear yes, or a clear reason for hesitation.
3. What would make you recommend something other than LASIK for me? The surgeon should be able to describe the alternatives without being prompted twice.
4. How do my pupils affect night glare? This should connect to your dim-light pupil measurement.
5. Which laser will you use? I use the AMARIS Red excimer laser.
6. Who checks me the next day, and what happens if my vision drifts years from now? Healing Eye runs a dedicated LASIK/LASEK revision center. The clinic also operates a lifetime surgery responsibility policy, which concerns ongoing care after surgery, not a promise of a particular visual result.

If the person across the desk can't answer the first two, the exam probably wasn't finished.

When would I tell you it's not LASIK, and what are the risks?

The FDA lists situations where LASIK may not be appropriate, including an unstable prescription, pregnancy or breastfeeding, and certain diseases or medications that affect healing.

In practice, the common reasons I steer someone away from flap-based LASIK are:

• a thin cornea, or topography with irregularity or signs suggesting keratoconus
• significant dry eye (see whether LASIK is possible with dry eyes)
• a prescription that hasn't settled yet
• pregnancy or breastfeeding
• a job or sport with frequent strong impact to the eyes

The alternatives each answer a different problem. LASEK treats the surface without a flap and suits some thinner corneas and impact sports; the LASEK vs LASIK comparison covers the trade-off in recovery.

SMILE is a flapless method that corrects through a 2 to 4mm micro-incision, and it may keep more of the cornea's strength, which is one reason it is often discussed for active, sporty patients. If you do combat sports or other activities with frequent strong impact to the eyes, I'd weigh a flapless method such as SMILE ahead of Clear LASIK. An implantable lens leaves corneal tissue in place and is often discussed for high myopia.

Even when LASIK is the right choice, it carries risks. The American Academy of Ophthalmology describes dry eye, glare, halos and starbursts, and under- or over-correction among the possible effects. Early dryness and some night glare are common in the first weeks and usually ease with time; regression can happen as eyes change over the years, which is why follow-up checks matter. No surgeon can promise a specific result for your eyes before surgery.

What happens on surgery day and the morning after?

On surgery day, only numbing drops are used, no injection, and most people describe only a mild sense of pressure.

For Clear LASIK, a thin flap is created and lifted, the excimer laser reshapes the cornea according to the profile designed from your exam data, and the flap is repositioned without stitches; both eyes usually take about ten minutes. Your eyes are checked the same day, and the surgeon who examined you checks your recovery the next morning.

For a few hours afterwards, dryness, tearing or a gritty feeling is common. Most people see clearly from the next day and return to daily life within one to two days, though this varies. For the first one to two weeks you use prescribed drops on schedule and avoid rubbing your eyes, saunas, swimming and eye makeup for the advised period.

What does "LASIK surgeon near me" mean when home is far away?

Before you travel, identify a local ophthalmologist you could see for anything urgent, and keep a copy of your exam results and surgery record for your local doctor.

On the clinic's side, follow-up after you return home continues through its lifetime surgery responsibility policy and its dedicated LASIK/LASEK revision center, both of which concern ongoing care, not a promise of a particular visual result.

On the Seoul side, Healing Eye is at 470 Gangnam-daero, 10–11F, one minute on foot from Sinnonhyeon Station and about 70 minutes from Incheon Airport.

The clinic is registered with Korea's Ministry of Health and Welfare to receive international patients, and the Healing Eye English home page lists the treatments in one place. How many days you should stay depends on your exam and the procedure chosen, and we work that out with you at consultation rather than guessing in advance.

If you want to check who you'd be dealing with, my background is listed on the English profile page, and in Korean on the clinic's Korean doctor page.

Pick the one question from the list above that matters most for your eyes, and send it on WhatsApp together with a photo of your latest prescription or eye exam report. We'll look at it and point you toward a likely direction, along with what only the in-person exam can settle.