During Advanced Surface Ablation, the “skin” layer (epithelium) of the cornea is removed.

In Trans-epithelial Photorefractive Keratectomy (TransPRK), the epithelium is removed and reshaping of the cornea is performed both by using the Excimer Laser in a single continuous step. (i.e. Laser removal of epithelium)

In Epithelial Laser in-situ Keratomileusis (EpiLASIK) , the epithelium is removed using a mechanical separator. This is then followed by  Excimer Laser treatment to correct the refractive error. At the end of the procedure, the sheet of epithelium is replaced and a bandage contact lens is placed over the cornea to aid healing (i.e. Mechanical removal of epithelium).

Laser Assisted Sub-Epithelial Keratomileusis (LASEK) differs from EpiLASIK in that the epithelium is separated and removed using alcohol. At the end of the procedure, the sheet of epithelium is replaced and a bandage contact lens is placed over the cornea to aid healing (i.e. Chemical removal of epithelium).

TTSH LASIK Centre

TTSH Eye Centre, Level 1
Tan Tock Seng Hospital
11 Jalan Tan Tock Seng
Singapore 308433

LASIK Hotline : (65) 6357 2255
Email :

Opening Hours

Monday-Friday 8:30am - 5:30pm
Closed on Saturday, Sunday & Public Holiday