Clinical outcomes after implantation of a combination of intrastromal corneal ring segments in different optical zones in advanced keratoconus
Purpose: To evaluate the efficacy and safety of combined intrastromal corneal ring segment (ICRS) implantation in different optical zones for advanced keratoconus. Methods: This retrospective study analyzed 32 eyes from 30 patients who underwent combined implantation of an ICRS (320° arc, 200 µm) in the 5-mm zone and a...