How is ASA/PRK/LASEK different from LASIK?

During “normal” LASIK, an IntraLase machine is used to create a flap, following which an excimer laser is used to reshape the cornea.


Advanced Surface Ablation (ASA), Photorefractive keratectomy (PRK) and LASEK is a flapless LASIK method. Instead of creating a flap, the surgeon removes the epithelium of the cornea. Aside from that, the remaining treatment steps are the same as those in normal LASIK.

What is Epi-LASIK?

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Are Flapless LASIK Methods Always Better?

Both flap (LASIK, iLASIK) and flapless methods have their advantages and disadvantages. It is incorrect to say that one is better than the other.

A doctor will be able to make a recommendation based on your eye condition. It is best to look for a clinic that offers both methods.

Who is ASA/PRK/LASEK suitable For?

ASA/PRK/LASEK is more painful and has longer recovery times. For this reason, we would recommend normal LASIK for most patients.

However, for patients with thin corneas, ASA/PRK/LASEK is a good treatment option.

Interested in LASIK?

Pre-LASIK Eye Screening - $200
Pre-SMILE ReLEx Eye Screening - $200
Standard LASIK - from $3,467
iLASIK Wavefront Customized - from $4,491
ReLEx SMILE - From $4,491
(Both eyes, subjected to 9% GST)

Why Choose Us

Established. Experienced. Trusted.

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APEC believes in continuous innovation, we regularly update our medical technology according to the latest industry developments. 

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Rest assured in the hands of experienced doctors with many years of surgical experience, as well as seasoned nurses and optometrists.

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APEC’s reputation is one that has been built around experience and trust, as evidenced by our large pool of referral patients.