Am i eligibile for prk when i had corneal scar?

It is possible: Depending on the depth, size and location of the scar, prk or even lasik may be possible vision correction options for you. Your best bet would be an evaluation with a lasik doctor to determine your candiddacy for the treatment.

Sometimes: A variant of the prk procedures, called ptk (phototherapeutic keratectomy) utilizes the same excimer laser and in some cases, can reduce or remove corneal scarring. It depends on the depth and location of the scar. It sometimes can be combined with prk to reduce the refractive error.

Usually: Prk, especially combined with some ptk, can be used to reduce or eliminate most corneal scars while improving your uncorrected vision. Sometimes the procedures need to be staged. They also require sufficient corneal thickness and curvature. The most easily corrected prescriptions in this situation are nearsighted ones, with or without astigmatism. Your eye surgeon can confirm your eligibility.