The instrument used—the Amaris 750 Hz excimer laser (Schwind eye-tech-solutions, Germany)—has been approved for use in Asia and the European Union, but has not been approved for clinical use in the United States.
TransPRK is the next step in the development of surface manipulation using
The all-laser system combines epithelial ablation and the refractive laser treatment in a single step, which reduces operative time. The no-touch technique is gentler on the eye, which translates into faster healing and faster restoration of visual acuity.
The mean corneal epithelial thickness is 53 µm at the center and 63 µm at the 8-mm periphery, he continued.
The Amaris PTK ablation target is 55 µm centrally and 65 µm at the periphery of the 8-mm ablation zone. The single step ablation not only reduces operative time, but reduces the risk of dehydration between steps that is part of most other refractive surgical techniques.