SMILE and LASIK both reshape the cornea to correct nearsightedness and astigmatism, but they do it differently. LASIK creates a thin corneal flap and reshapes the tissue underneath. SMILE removes a small disc of tissue through a 2 to 3 mm opening and creates no flap. Which one suits you depends on your prescription, corneal thickness, dry-eye risk, and lifestyle, and only an in-person eye exam can settle it.
Key facts at a glance
- LASIK: the procedure itself takes less than 30 minutes; a follow-up visit is needed within 24 to 48 hours.
- SMILE: a small 2 to 3 mm incision, no corneal flap.
- Vision stabilizing: vision can fluctuate for 3 to 6 months after LASIK before it settles.
- Cost and stay length: depend on the clinic and your exam results. Ask Cnect for a written estimate.
Book a free consultation with Cnect and we will match you with a partner clinic in Busan and explain the timeline before you travel.
How LASIK works
The surgeon creates a thin flap on the surface of the cornea, using a blade or a laser. An excimer laser then reshapes the tissue underneath, and the flap is put back in place without stitches. You receive numbing drops, and you may feel pressure while the flap is made. The U.S. Food and Drug Administration (FDA) notes that afterward the eye can burn, itch, or feel irritated, vision is hazy at first, and light sensitivity, glare, and halos are common. You will wear an eye shield, especially at night, and use prescribed eye drops (FDA: what to expect during and after surgery).
How SMILE works
SMILE stands for small incision lenticule extraction. A laser shapes a thin disc of corneal tissue (the lenticule), and the surgeon removes it through a tiny incision of about 2 to 3 mm. No flap is created, so the front of the cornea stays largely intact. Ophthalmology references describe better preservation of corneal strength, fewer cut nerves, and better dry-eye scores after SMILE than after LASIK (American Academy of Ophthalmology EyeWiki: SMILE).
SMILE vs LASIK: side-by-side
| Question | LASIK | SMILE |
|---|---|---|
| Corneal flap | Yes, thin flap is created | No flap, 2 to 3 mm incision |
| Dry-eye risk | Common in the early weeks | Generally reported as lower |
| Corneal strength | Flap slightly reduces it | Better preserved |
| Best known for | Long track record, wide range of prescriptions | Flapless approach, comfort for active lifestyles |
| Follow-up | Check within 24 to 48 hours | Your surgeon sets the schedule |
Who may not be a candidate
Eye-care references list several conditions that can rule out SMILE or call for extra caution, including an unstable prescription, corneal ectasia, severe dry eye, pregnancy, and some corneal conditions. Being under 22, having diabetes, or a history of herpes eye infection may also need special review. LASIK has its own screening. Your surgeon will measure corneal thickness and shape and check your tear film before recommending a procedure.
What a visit to Busan looks like with Cnect
- Before you travel: share your current prescription and eye history with your Cnect coordinator, who matches you with a partner clinic.
- Arrival: airport pickup and an interpreter can be arranged.
- Exam day: the clinic measures your eyes and confirms which procedure fits.
- Surgery and first check: plan to stay in Busan for the first follow-up visit. Ask your clinic how many days it recommends.
- Going home: you receive aftercare instructions and eye drops, and your coordinator helps with follow-up questions.
See our SMILE and LASIK page for the services Cnect arranges.
Recovery basics
The FDA lists these typical LASIK restrictions: no contact sports for 1 to 3 days, no strenuous sports for 4 or more weeks, no makeup or creams around the eyes for 2 weeks, and no swimming or hot tubs for 1 to 2 months. You cannot drive on the day of surgery, so arrange transportation. Ask your surgeon for the exact rules for the procedure you choose.
Frequently asked questions
Is SMILE better than LASIK?
Neither is better for everyone. SMILE avoids a flap and is associated with less early dry eye, while LASIK has a long track record and is used for a wide range of prescriptions. Your eye exam decides.
Can I have LASIK or SMILE in one trip to Busan?
Many visitors plan the exam and surgery close together, but you should stay for the first follow-up visit. Confirm the schedule with your clinic before booking flights.
Is the procedure painful?
You receive numbing drops. You may feel pressure during LASIK, and mild burning or irritation afterward is common.
How long until my vision is stable?
Vision can fluctuate for 3 to 6 months after LASIK before it stabilizes. Your surgeon will tell you what to expect for your case.
Will an interpreter be available?
Yes. Cnect coordinators can arrange interpretation for your visit. Tell us your language when you book.
Ready to plan your visit? Book a free consultation.
This article is general information, not medical advice. Consult a licensed doctor before deciding on surgery. Medically reviewed by SH Jeon. Last updated September 30, 2026.
Sources: FDA, LASIK: what to expect during and after surgery; American Academy of Ophthalmology EyeWiki, Small Incision Lenticule Extraction (SMILE).