Comparison guide

Femto-LASIK vs Microkeratome LASIK: Which Is Better? (2026)

Femto-LASIK cuts the flap with a laser; microkeratome LASIK uses an oscillating blade. A 2012 meta-analysis of 15 studies (3,679 eyes) found similar final vision and safety, but femtosecond flaps were more predictable in thickness. In Seoul, LASIK costs ₩1.5M–₩2.5M for both eyes; ask which flap method you are quoted.
Reviewed November 2026 · Seoul LASIK Clinic Directory
Femto-LASIK vs Microkeratome LASIK: Which Is Better? (2026)

Is femto-LASIK better than microkeratome LASIK?

Femto-LASIK gives more precise, predictable flaps and is widely used at modern refractive clinics. In comparative studies, though, final vision and safety were similar, so a well-performed microkeratome LASIK is not unsafe.

Both are LASIK: a thin hinged flap is lifted from the cornea, an excimer laser reshapes the tissue underneath and the flap is laid back. The only difference is how the flap is made. With a microkeratome, a suction ring holds the eye while a fine oscillating blade passes across the cornea. With a femtosecond laser, millions of tiny pulses create a cleavage plane at a set depth, and the surgeon then lifts the flap. Clinics often call this all-laser or blade-free LASIK. SMILE uses a femtosecond laser too, but without a flap.

Femto-LASIK vs microkeratome side by side

Factor Femto-LASIK Microkeratome LASIK
Flap tool Femtosecond laser (e.g. IntraLase iFS, ZEISS VisuMax, Ziemer, WaveLight FS200) Oscillating steel blade with suction ring
Flap thickness predictability Higher More variable
Flap shape and hinge Programmable diameter, depth, hinge and side-cut angle Set by the device head
Final uncorrected vision Similar in meta-analysis Similar in meta-analysis
Epithelial defects Less common More common
Diffuse lamellar keratitis (DLK) More common Less common
Classic blade flap problems Avoided Rare: buttonhole, free cap, incomplete flap
Laser-specific issues Opaque bubble layer, transient light sensitivity (uncommon) Not applicable
Price Usually higher Usually lower

Comparative findings come from a 2012 systematic review in the Journal of Refractive Surgery. Price differences vary by clinic.

What does the research show?

The largest pooled analysis found no clear advantage in final vision, but better predictability with the laser.

The 2012 meta-analysis combined 15 comparative studies of 3,679 eyes treated with IntraLase femtosecond laser or mechanical microkeratomes for myopia. It found no significant difference in final uncorrected distance vision, in the share of eyes seeing 20/20 or better, or in eyes losing two or more lines of corrected vision. Flap thickness was significantly more predictable with the femtosecond laser. Epithelial defects were more frequent with microkeratomes, while diffuse lamellar keratitis, a usually treatable inflammation under the flap, was more frequent with the femtosecond laser. The authors concluded that the laser may improve predictability but showed no significant safety or efficacy advantage. Femtosecond lasers and microkeratomes have both been refined since those studies were published, so the review cannot settle every comparison today, and the surgeon's experience with a given device remains important.

Why does flap predictability matter?

A more predictable flap leaves a more predictable amount of untouched cornea underneath, which matters for safety margins.

Surgeons plan LASIK so enough residual stromal bed remains under the flap to keep the cornea stable; a common rule is at least about 250 µm. If a flap comes out thicker than planned, that margin shrinks, which raises the theoretical risk of corneal ectasia. Femtosecond lasers allow thinner, more uniform flaps, which can make LASIK possible for some borderline corneas and leave more tissue for a future enhancement. See corneal thickness for LASIK and LASIK enhancement.

How do prices compare in Korea?

All-laser LASIK usually costs more than blade LASIK at the same provider, but both sit within the broad Seoul range.

Our Seoul range for LASIK is ₩1.5M–₩2.5M, approximately $1,100–$1,900 for both eyes, checked in 2026. One published example, CNU Hwasun Hospital, listed LASIK from about ₩2.0M and IntraLase LASIK from about ₩2.7M in October 2026, a premium of roughly ₩700,000. Some private clinics advertise all-laser LASIK at the lower end of the range. Always confirm which flap method your quote covers. See LASIK cost in Korea.

Is recovery different?

Recovery is very similar: most people see well within a day or two with either flap method.

On surgery day the eye usually feels gritty and watery for a few hours, and vision is hazy at first. With a microkeratome, the suction ring is applied briefly while the blade passes; with a femtosecond laser, suction lasts for the laser cut, and some patients notice a brief dimming of vision. A few femtosecond patients develop temporary light sensitivity in the first weeks, which usually settles with drops. Either way you will use antibiotic and steroid drops for about a week, lubricating drops for longer, and should avoid rubbing your eyes, swimming and contact sports while the flap seals. A hard blow can still displace a LASIK flap years later with either method. Plan about 3–5 days in Seoul and follow the LASIK recovery day by day guide.

Who should choose which?

Femto-LASIK often suits you if you:

  • Have borderline corneal thickness and want the most predictable flap
  • Want programmable flap size and position, for example with larger pupils
  • Prefer the method most refractive clinics now promote

Microkeratome LASIK may suit you if you:

  • Have healthy, thick corneas and a moderate prescription
  • Are treated by a surgeon highly experienced with blade flaps
  • Want a lower price and your clinic offers it

If you want to avoid a flap altogether, compare SMILE vs LASIK or LASIK vs LASEK. Either LASIK method can cause dry eye, glare and halos; see LASIK side effects. A full exam should guide the choice.

Sources

Key facts

  • Femto-LASIK: flap cut by a femtosecond laser, e.g. IntraLase iFS or ZEISS VisuMax; also called all-laser LASIK
  • Microkeratome LASIK: flap cut by a precision oscillating blade
  • Evidence: 15 studies, 3,679 eyes: no significant difference in final vision or lines lost; femto flaps more predictable
  • Complications: epithelial defects more common with blades; DLK inflammation more common with femtosecond
  • Seoul price: LASIK ₩1.5M–₩2.5M (≈$1,100–$1,900) both eyes
  • Guide: LASIK surgery in Korea

Independent directory. Prices are typical ranges reported by Seoul clinics and change often. Always confirm a written quote and get a full eye exam before booking. This page is general information, not medical advice.

FAQ

Frequently asked questions

Is blade-free LASIK safer?

It avoids rare blade flap problems and gives more predictable flaps, but a 2012 meta-analysis found no significant difference in final vision or safety. Each method has its own uncommon complications.

What is the difference between femto-LASIK and SMILE?

Femto-LASIK uses a femtosecond laser to cut a flap, then an excimer laser reshapes the cornea. SMILE uses a femtosecond laser to cut a lenticule removed through a small incision, with no flap.

Do Korean clinics still use microkeratomes?

Many Seoul refractive clinics advertise all-laser LASIK, but ask each clinic which flap method and laser your quote covers.

Is femto-LASIK more expensive?

Usually. One October 2026 listing showed about ₩2.0M for standard LASIK and ₩2.7M for IntraLase LASIK at the same hospital.

What is DLK after LASIK?

Diffuse lamellar keratitis is inflammation under the flap, usually in the first days. It is generally treated with steroid drops and was more common with femtosecond flaps in the 2012 review.

Planning vision correction in Seoul?

Compare clinics by district, check 2026 price ranges, and read our step-by-step planning guide for international patients.