How does CTAK compare to conventional keratoplasty techniques (PK/ALK) in patients with corneal ectasia?

Over the past 10 years, with long-term follow-up, I’ve seen that CTAK grafts remain clear and stable. Additionally, in comparison to conventional keratoplasty, I have not seen any episodes of graft rejection during this time period. In comparison to INTACs, I have not seen any episodes of corneal me...