PRK : is performing the refractive surgery without making the corneal flap. There are no flap complications with the PRK surgery, however visual rehabilitation takes longer and it is more painful comparing to LASIK. It is good for patients with a thin cornea.
The Treatment Steps
Step 1 Preparing the outer layer
An alcohol solution or special brush is used to dissolve the thin, outer layer of the eye (epithelium).
Step 2 Remove the outer layer
The epithelium is removed either manually or with an excimer laser. It can also be moved to the side with a manual instrument.
Step 3 Correcting the error
An excimer laser is used to sculpt the corneal, thereby correcting the refractive error.
Step 4 Protecting the eye
Finally, a bandage contact lens is placed over the eye for protection until the epithelium grows back.