Study Status: Completed
Recruit Status: Completed
Study Type: Interventional
Official Title: Intrastromal Corneal Ring Segment Implantation for High Astigmatism on Postkeratoplasty Eyes
Brief Summary: To evaluate the clinical outcomes of Intrastromal Corneal Ring Segment (ICRS) implantation to correct high-degree astigmatism on eyes with prior penetrating keratoplasty (PK).